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7972804 = 227284743
BaseRepresentation
bin11110011010011111000100
3120000001122001
4132122133010
54020112204
6442515044
7124524220
oct36323704
916001561
107972804
1145560a4
122805a84
131861c48
1410b7780
15a774a4
hex79a7c4

7972804 has 12 divisors (see below), whose sum is σ = 15945664. Its totient is φ = 3416904.

The previous prime is 7972781. The next prime is 7972817. The reversal of 7972804 is 4082797.

It is a happy number.

7972804 is an admirable number.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142344 + ... + 142399.

Almost surely, 27972804 is an apocalyptic number.

It is an amenable number.

7972804 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

7972804 is a wasteful number, since it uses less digits than its factorization.

7972804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284754 (or 284752 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 7972804 is about 2823.6154129059. The cubic root of 7972804 is about 199.7731093672.

The spelling of 7972804 in words is "seven million, nine hundred seventy-two thousand, eight hundred four".

Divisors: 1 2 4 7 14 28 284743 569486 1138972 1993201 3986402 7972804