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17972192992 = 251343202387
BaseRepresentation
bin10000101111001110…
…011110011011100000
31201101111211222222111
4100233032132123200
5243301340133432
612131210245104
71204240056055
oct205716363340
951344758874
1017972192992
11769291a666
123596a26794
131905545830
14c26c6d02c
15702c14347
hex42f39e6e0

17972192992 has 24 divisors (see below), whose sum is σ = 38104506216. Its totient is φ = 8294858112.

The previous prime is 17972192983. The next prime is 17972192999. The reversal of 17972192992 is 29929127971.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17972192999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21600778 + ... + 21601609.

It is an arithmetic number, because the mean of its divisors is an integer number (1587687759).

Almost surely, 217972192992 is an apocalyptic number.

It is an amenable number.

17972192992 is an abundant number, since it is smaller than the sum of its proper divisors (20132313224).

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

17972192992 is a wasteful number, since it uses less digits than its factorization.

17972192992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43202410 (or 43202402 counting only the distinct ones).

The product of its digits is 2571912, while the sum is 58.

The spelling of 17972192992 in words is "seventeen billion, nine hundred seventy-two million, one hundred ninety-two thousand, nine hundred ninety-two".

Divisors: 1 2 4 8 13 16 26 32 52 104 208 416 43202387 86404774 172809548 345619096 561631031 691238192 1123262062 1382476384 2246524124 4493048248 8986096496 17972192992