256164804 has 36 divisors (see below), whose sum is σ = 740032384. Its totient is φ = 73189872.

The previous prime is 256164793. The next prime is 256164829. The reversal of 256164804 is 408461652.

256164804 is a `hidden beast` number, since 2 + 5 + 6 + 1 + 648 + 0 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

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 11 ways as a sum of consecutive naturals, for example, 508012 + ... + 508515.

Almost surely, 2^256164804 is an apocalyptic number.

It is an amenable number.

256164804 is an abundant number, since it is smaller than the sum of its proper divisors (483867580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256164804 is a wasteful number, since it uses less digits than its factorization.

256164804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016544 (or 1016539 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 256164804 is about 16005.1492963983. The cubic root of 256164804 is about 635.0966467896.

The spelling of 256164804 in words is "two hundred fifty-six million, one hundred sixty-four thousand, eight hundred four".