256152808 has 8 divisors (see below), whose sum is σ = 480286530. Its totient is φ = 128076400.

The previous prime is 256152797. The next prime is 256152893. The reversal of 256152808 is 808251652.

It can be written as a sum of positive squares in only one way, i.e., 256064004 + 88804 = 16002^2 + 298^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×256152808² = 131228522092569728, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 16009543 + ... + 16009558.

Almost surely, 2^256152808 is an apocalyptic number.

It is an amenable number.

256152808 is a deficient number, since it is larger than the sum of its proper divisors (224133722).

256152808 is a wasteful number, since it uses less digits than its factorization.

256152808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32019107 (or 32019103 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 37.

The square root of 256152808 is about 16004.7745376185. The cubic root of 256152808 is about 635.0867329397.

The spelling of 256152808 in words is "two hundred fifty-six million, one hundred fifty-two thousand, eight hundred eight".