7904872 has 8 divisors (see below), whose sum is σ = 14821650. Its totient is φ = 3952432.

The previous prime is 7904867. The next prime is 7904873. The reversal of 7904872 is 2784097.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 7584516 + 320356 = 2754^2 + 566^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×7904872³ (a number of 22 digits) contains 333 as substring.

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 not an unprimeable number, because it can be changed into a prime (7904873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494047 + ... + 494062.

Almost surely, 2^7904872 is an apocalyptic number.

It is an amenable number.

7904872 is a deficient number, since it is larger than the sum of its proper divisors (6916778).

7904872 is a wasteful number, since it uses less digits than its factorization.

7904872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988115 (or 988111 counting only the distinct ones).

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

The square root of 7904872 is about 2811.5604208340. The cubic root of 7904872 is about 199.2041036127.

The spelling of 7904872 in words is "seven million, nine hundred four thousand, eight hundred seventy-two".