256051436 has 6 divisors (see below), whose sum is σ = 448090020. Its totient is φ = 128025716.

The previous prime is 256051423. The next prime is 256051517. The reversal of 256051436 is 634150652.

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, 32006426 + ... + 32006433.

It is an arithmetic number, because the mean of its divisors is an integer number (74681670).

Almost surely, 2^256051436 is an apocalyptic number.

It is an amenable number.

256051436 is a deficient number, since it is larger than the sum of its proper divisors (192038584).

256051436 is a wasteful number, since it uses less digits than its factorization.

256051436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64012863 (or 64012861 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 256051436 is about 16001.6072942689. The cubic root of 256051436 is about 635.0029437522.

The spelling of 256051436 in words is "two hundred fifty-six million, fifty-one thousand, four hundred thirty-six".