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23020203120 = 24351633531667
BaseRepresentation
bin10101011100000111…
…000110110001110000
32012102022120111001120
4111130013012301300
5334121132444440
614324134502240
71443314332545
oct253407066160
965368514046
1023020203120
119843339362
124565504980
13222b313b85
14118546abcc
158eaea0dd0
hex55c1c6c70

23020203120 has 160 divisors (see below), whose sum is σ = 72047031552. Its totient is φ = 6080126976.

The previous prime is 23020203113. The next prime is 23020203137. The reversal of 23020203120 is 2130202032.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 23020203120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13808527 + ... + 13810193.

Almost surely, 223020203120 is an apocalyptic number.

23020203120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23020203120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36023515776).

23020203120 is an abundant number, since it is smaller than the sum of its proper divisors (49026828432).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23020203120 is a wasteful number, since it uses less digits than its factorization.

23020203120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2199 (or 2193 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 23020203120 its reverse (2130202032), we get a palindrome (25150405152).

The spelling of 23020203120 in words is "twenty-three billion, twenty million, two hundred three thousand, one hundred twenty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 40 48 60 80 120 163 240 326 353 489 652 706 815 978 1059 1304 1412 1630 1667 1765 1956 2118 2445 2608 2824 3260 3334 3530 3912 4236 4890 5001 5295 5648 6520 6668 7060 7824 8335 8472 9780 10002 10590 13040 13336 14120 16670 16944 19560 20004 21180 25005 26672 28240 33340 39120 40008 42360 50010 57539 66680 80016 84720 100020 115078 133360 172617 200040 230156 271721 287695 345234 400080 460312 543442 575390 588451 690468 815163 863085 920624 1086884 1150780 1176902 1358605 1380936 1630326 1726170 1765353 2173768 2301560 2353804 2717210 2761872 2942255 3260652 3452340 3530706 4075815 4347536 4603120 4707608 5434420 5884510 6521304 6904680 7061412 8151630 8826765 9415216 10868840 11769020 13042608 13809360 14122824 16303260 17653530 21737680 23538040 28245648 32606520 35307060 47076080 65213040 70614120 95917513 141228240 191835026 287752539 383670052 479587565 575505078 767340104 959175130 1151010156 1438762695 1534680208 1918350260 2302020312 2877525390 3836700520 4604040624 5755050780 7673401040 11510101560 23020203120