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7992972 = 2233135693
BaseRepresentation
bin11110011111011010001100
3120001002022000
4132133122030
54021233342
6443152300
7124640061
oct36373214
916032260
107992972
11456a269
122815690
13186b190
1410c0c68
15a7d44c
hex79f68c

7992972 has 48 divisors (see below), whose sum is σ = 22320480. Its totient is φ = 2458944.

The previous prime is 7992923. The next prime is 7992973. The reversal of 7992972 is 2792997.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (7992973) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1443 + ... + 4250.

It is an arithmetic number, because the mean of its divisors is an integer number (465010).

Almost surely, 27992972 is an apocalyptic number.

It is an amenable number.

7992972 is an abundant number, since it is smaller than the sum of its proper divisors (14327508).

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

7992972 is a wasteful number, since it uses less digits than its factorization.

7992972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5719 (or 5711 counting only the distinct ones).

The product of its digits is 142884, while the sum is 45.

The square root of 7992972 is about 2827.1844651526. The cubic root of 7992972 is about 199.9414161747.

The spelling of 7992972 in words is "seven million, nine hundred ninety-two thousand, nine hundred seventy-two".

Divisors: 1 2 3 4 6 9 12 13 18 26 27 36 39 52 54 78 108 117 156 234 351 468 702 1404 5693 11386 17079 22772 34158 51237 68316 74009 102474 148018 153711 204948 222027 296036 307422 444054 614844 666081 888108 1332162 1998243 2664324 3996486 7992972