256036634 has 16 divisors (see below), whose sum is σ = 439883136. Its totient is φ = 109489200.

The previous prime is 256036631. The next prime is 256036639. The reversal of 256036634 is 436630652.

It is a junction number, because it is equal to n+sod(n) for n = 256036594 and 256036603.

It is not an unprimeable number, because it can be changed into a prime (256036631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13382 + ... + 26289.

It is an arithmetic number, because the mean of its divisors is an integer number (27492696).

Almost surely, 2^256036634 is an apocalyptic number.

256036634 is a deficient number, since it is larger than the sum of its proper divisors (183846502).

256036634 is a wasteful number, since it uses less digits than its factorization.

256036634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40141.

The product of its (nonzero) digits is 77760, while the sum is 35.

The square root of 256036634 is about 16001.1447715468. The cubic root of 256036634 is about 634.9907072854.

The spelling of 256036634 in words is "two hundred fifty-six million, thirty-six thousand, six hundred thirty-four".