256644362 has 16 divisors (see below), whose sum is σ = 436400160. Its totient is φ = 112216752.

The previous prime is 256644341. The next prime is 256644389. The reversal of 256644362 is 263446652.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259268 + ... + 260255.

It is an arithmetic number, because the mean of its divisors is an integer number (27275010).

Almost surely, 2^256644362 is an apocalyptic number.

256644362 is a deficient number, since it is larger than the sum of its proper divisors (179755798).

256644362 is a wasteful number, since it uses less digits than its factorization.

256644362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519557.

The product of its digits is 207360, while the sum is 38.

The square root of 256644362 is about 16020.1236574503. The cubic root of 256644362 is about 635.4927144962.

The spelling of 256644362 in words is "two hundred fifty-six million, six hundred forty-four thousand, three hundred sixty-two".