76440256 has 14 divisors (see below), whose sum is σ = 151686260. Its totient is φ = 38220096.

The previous prime is 76440251. The next prime is 76440263. The reversal of 76440256 is 65204467.

It is a super-2 number, since 2×76440256² = 11686225474691072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (76440251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 597126 + ... + 597253.

Almost surely, 2^76440256 is an apocalyptic number.

It is an amenable number.

76440256 is a deficient number, since it is larger than the sum of its proper divisors (75246004).

76440256 is a wasteful number, since it uses less digits than its factorization.

76440256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1194391 (or 1194381 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 76440256 is about 8743.0118380338. The cubic root of 76440256 is about 424.3986993777.

The spelling of 76440256 in words is "seventy-six million, four hundred forty thousand, two hundred fifty-six".