7938256 has 20 divisors (see below), whose sum is σ = 15756804. Its totient is φ = 3872000.

The previous prime is 7938251. The next prime is 7938311. The reversal of 7938256 is 6528397.

It can be written as a sum of positive squares in 2 ways, for example, as 4769856 + 3168400 = 2184^2 + 1780^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7938251) 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, 5395 + ... + 6706.

Almost surely, 2^7938256 is an apocalyptic number.

It is an amenable number.

7938256 is a deficient number, since it is larger than the sum of its proper divisors (7818548).

7938256 is a wasteful number, since it uses less digits than its factorization.

7938256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12150 (or 12144 counting only the distinct ones).

The product of its digits is 90720, while the sum is 40.

The square root of 7938256 is about 2817.4910825059. The cubic root of 7938256 is about 199.4841372387.

The spelling of 7938256 in words is "seven million, nine hundred thirty-eight thousand, two hundred fifty-six".