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23642978960 = 245436872959
BaseRepresentation
bin10110000001001110…
…110011101010010000
32021000201102202220102
4112001032303222100
5341410100311320
614510023031532
71464616001546
oct260116635220
967021382812
1023642978960
11a032933037
1246b9b9b5a8
1322ca3554a3
141204061d96
159359bc175
hex5813b3a90

23642978960 has 40 divisors (see below), whose sum is σ = 56248304640. Its totient is φ = 9237255552.

The previous prime is 23642978923. The next prime is 23642978977. The reversal of 23642978960 is 6987924632.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 23642978896 and 23642978905.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3433040 + ... + 3439919.

It is an arithmetic number, because the mean of its divisors is an integer number (1406207616).

Almost surely, 223642978960 is an apocalyptic number.

23642978960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23642978960 is an abundant number, since it is smaller than the sum of its proper divisors (32605325680).

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

23642978960 is a wasteful number, since it uses less digits than its factorization.

23642978960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6873015 (or 6873009 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 56.

The spelling of 23642978960 in words is "twenty-three billion, six hundred forty-two million, nine hundred seventy-eight thousand, nine hundred sixty".

Divisors: 1 2 4 5 8 10 16 20 40 43 80 86 172 215 344 430 688 860 1720 3440 6872959 13745918 27491836 34364795 54983672 68729590 109967344 137459180 274918360 295537237 549836720 591074474 1182148948 1477686185 2364297896 2955372370 4728595792 5910744740 11821489480 23642978960