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23082340820 = 22572112141219
BaseRepresentation
bin10101011111110100…
…001001000111010100
32012120122111101221212
4111133310021013110
5334233034401240
614334234400552
71445000442200
oct253764110724
965518441855
1023082340820
11987541a330
124582290158
13223b15bb46
14118d803b00
15901677165
hex55fd091d4

23082340820 has 72 divisors (see below), whose sum is σ = 61512968160. Its totient is φ = 7194492480.

The previous prime is 23082340807. The next prime is 23082340829. The reversal of 23082340820 is 2804328032.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23082340829) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1059830 + ... + 1081389.

It is an arithmetic number, because the mean of its divisors is an integer number (854346780).

Almost surely, 223082340820 is an apocalyptic number.

23082340820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23082340820 is an abundant number, since it is smaller than the sum of its proper divisors (38430627340).

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

23082340820 is a wasteful number, since it uses less digits than its factorization.

23082340820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2141253 (or 2141244 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

Adding to 23082340820 its reverse (2804328032), we get a palindrome (25886668852).

The spelling of 23082340820 in words is "twenty-three billion, eighty-two million, three hundred forty thousand, eight hundred twenty".

Divisors: 1 2 4 5 7 10 11 14 20 22 28 35 44 49 55 70 77 98 110 140 154 196 220 245 308 385 490 539 770 980 1078 1540 2156 2695 5390 10780 2141219 4282438 8564876 10706095 14988533 21412190 23553409 29977066 42824380 47106818 59954132 74942665 94213636 104919731 117767045 149885330 164873863 209839462 235534090 299770660 329747726 419678924 471068180 524598655 659495452 824369315 1049197310 1154117041 1648738630 2098394620 2308234082 3297477260 4616468164 5770585205 11541170410 23082340820