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13023323220 = 2235389709787
BaseRepresentation
bin11000010000100000…
…00010010001010100
31020121121200100220110
430020100002101110
5203132432320340
65552143003020
7640505264235
oct141020022124
936547610813
1013023323220
115583365546
122635599470
1312c717991b
148b78bb08c
1551350c680
hex308402454

13023323220 has 96 divisors (see below), whose sum is σ = 36657129600. Its totient is φ = 3454677504.

The previous prime is 13023323213. The next prime is 13023323227. The reversal of 13023323220 is 2232332031.

It is an interprime number because it is at equal distance from previous prime (13023323213) and next prime (13023323227).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13023323227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16547667 + ... + 16548453.

It is an arithmetic number, because the mean of its divisors is an integer number (381845100).

Almost surely, 213023323220 is an apocalyptic number.

13023323220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13023323220 is an abundant number, since it is smaller than the sum of its proper divisors (23633806380).

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

13023323220 is a wasteful number, since it uses less digits than its factorization.

13023323220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1897 (or 1895 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 13023323220 its reverse (2232332031), we get a palindrome (15255655251).

The spelling of 13023323220 in words is "thirteen billion, twenty-three million, three hundred twenty-three thousand, two hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 389 709 778 787 1167 1418 1556 1574 1945 2127 2334 2361 2836 3148 3545 3890 3935 4254 4668 4722 5835 7090 7780 7870 8508 9444 10635 11670 11805 14180 15740 21270 23340 23610 42540 47220 275801 306143 551602 557983 612286 827403 918429 1103204 1115966 1224572 1379005 1530715 1654806 1673949 1836858 2231932 2758010 2789915 3061430 3309612 3347898 3673716 4137015 4592145 5516020 5579830 6122860 6695796 8274030 8369745 9184290 11159660 16548060 16739490 18368580 33478980 217055387 434110774 651166161 868221548 1085276935 1302332322 2170553870 2604664644 3255830805 4341107740 6511661610 13023323220