256402402 has 16 divisors (see below), whose sum is σ = 387335520. Its totient is φ = 127294048.

The previous prime is 256402373. The next prime is 256402403. The reversal of 256402402 is 204204652.

256402402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×256402402³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (256402403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 298758 + ... + 299614.

It is an arithmetic number, because the mean of its divisors is an integer number (24208470).

Almost surely, 2^256402402 is an apocalyptic number.

256402402 is a deficient number, since it is larger than the sum of its proper divisors (130933118).

256402402 is a wasteful number, since it uses less digits than its factorization.

256402402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1745.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 256402402 is about 16012.5701247489. The cubic root of 256402402 is about 635.2929410778.

The spelling of 256402402 in words is "two hundred fifty-six million, four hundred two thousand, four hundred two".