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20054752912 = 242375352769
BaseRepresentation
bin10010101011010110…
…110011111010010000
31220202122120000010101
4102223112303322100
5312033004043122
613114002542144
71306655405245
oct225326637220
956678500111
1020054752912
118561426767
123a78367954
131b77b384cc
14d836995cc
157c5984027
hex4ab5b3e90

20054752912 has 20 divisors (see below), whose sum is σ = 38858455980. Its totient is φ = 10026764288.

The previous prime is 20054752897. The next prime is 20054752943. The reversal of 20054752912 is 21925745002.

It can be written as a sum of positive squares in 2 ways, for example, as 9793873296 + 10260879616 = 98964^2 + 101296^2 .

It is a super-2 number, since 2×200547529122 (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353664 + ... + 406432.

It is an arithmetic number, because the mean of its divisors is an integer number (1942922799).

Almost surely, 220054752912 is an apocalyptic number.

It is an amenable number.

20054752912 is a deficient number, since it is larger than the sum of its proper divisors (18803703068).

20054752912 is a wasteful number, since it uses less digits than its factorization.

20054752912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76530 (or 76524 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 37.

The spelling of 20054752912 in words is "twenty billion, fifty-four million, seven hundred fifty-two thousand, nine hundred twelve".

Divisors: 1 2 4 8 16 23753 47506 52769 95012 105538 190024 211076 380048 422152 844304 1253422057 2506844114 5013688228 10027376456 20054752912