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23013244020 = 22351329504159
BaseRepresentation
bin10101011011101100…
…100011110001110100
32012101211110220222010
4111123230203301310
5334112342302040
614323325404220
71443201226614
oct253354436164
965354426863
1023013244020
11983a415938
124563109670
132229a48470
141184578a44
158ea578e80
hex55bb23c74

23013244020 has 48 divisors (see below), whose sum is σ = 69393784320. Its totient is φ = 5664798336.

The previous prime is 23013244019. The next prime is 23013244057. The reversal of 23013244020 is 2044231032.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14751300 + ... + 14752859.

It is an arithmetic number, because the mean of its divisors is an integer number (1445703840).

Almost surely, 223013244020 is an apocalyptic number.

23013244020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23013244020 is an abundant number, since it is smaller than the sum of its proper divisors (46380540300).

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

23013244020 is a wasteful number, since it uses less digits than its factorization.

23013244020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29504184 (or 29504182 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 23013244020 its reverse (2044231032), we get a palindrome (25057475052).

The spelling of 23013244020 in words is "twenty-three billion, thirteen million, two hundred forty-four thousand, twenty".

Divisors: 1 2 3 4 5 6 10 12 13 15 20 26 30 39 52 60 65 78 130 156 195 260 390 780 29504159 59008318 88512477 118016636 147520795 177024954 295041590 354049908 383554067 442562385 590083180 767108134 885124770 1150662201 1534216268 1770249540 1917770335 2301324402 3835540670 4602648804 5753311005 7671081340 11506622010 23013244020