256400162 has 8 divisors (see below), whose sum is σ = 386097516. Its totient is φ = 127700992.

The previous prime is 256400149. The next prime is 256400191. The reversal of 256400162 is 261004652.

It can be written as a sum of positive squares in 2 ways, for example, as 168246841 + 88153321 = 12971^2 + 9389^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248903 + ... + 249930.

Almost surely, 2^256400162 is an apocalyptic number.

256400162 is a deficient number, since it is larger than the sum of its proper divisors (129697354).

256400162 is a wasteful number, since it uses less digits than its factorization.

256400162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499092.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 256400162 is about 16012.5001795472. The cubic root of 256400162 is about 635.2910910427.

The spelling of 256400162 in words is "two hundred fifty-six million, four hundred thousand, one hundred sixty-two".