256515632 has 10 divisors (see below), whose sum is σ = 496999068. Its totient is φ = 128257808.

The previous prime is 256515583. The next prime is 256515641. The reversal of 256515632 is 236515652.

It is a junction number, because it is equal to n+sod(n) for n = 256515592 and 256515601.

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, 8016098 + ... + 8016129.

Almost surely, 2^256515632 is an apocalyptic number.

It is an amenable number.

256515632 is a deficient number, since it is larger than the sum of its proper divisors (240483436).

256515632 is a wasteful number, since it uses less digits than its factorization.

256515632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16032235 (or 16032229 counting only the distinct ones).

The product of its digits is 54000, while the sum is 35.

The square root of 256515632 is about 16016.1053942586. The cubic root of 256515632 is about 635.3864446654.

The spelling of 256515632 in words is "two hundred fifty-six million, five hundred fifteen thousand, six hundred thirty-two".