402136256 has 14 divisors (see below), whose sum is σ = 797989260. Its totient is φ = 201068096.

The previous prime is 402136219. The next prime is 402136279. The reversal of 402136256 is 652631204.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3141626 + ... + 3141753.

Almost surely, 2^402136256 is an apocalyptic number.

It is an amenable number.

402136256 is a deficient number, since it is larger than the sum of its proper divisors (395853004).

402136256 is an equidigital number, since it uses as much as digits as its factorization.

402136256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6283391 (or 6283381 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 402136256 is about 20053.3352836878. The cubic root of 402136256 is about 738.1156439738.

The spelling of 402136256 in words is "four hundred two million, one hundred thirty-six thousand, two hundred fifty-six".