256782072 has 32 divisors (see below), whose sum is σ = 659307600. Its totient is φ = 83280384.

The previous prime is 256782049. The next prime is 256782089. The reversal of 256782072 is 270287652.

It is a super-2 number, since 2×256782072² = 131874065001226368, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 256782072.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143697 + ... + 145472.

Almost surely, 2^256782072 is an apocalyptic number.

It is an amenable number.

256782072 is an abundant number, since it is smaller than the sum of its proper divisors (402525528).

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

256782072 is a wasteful number, since it uses less digits than its factorization.

256782072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289215 (or 289211 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 39.

The square root of 256782072 is about 16024.4211127891. The cubic root of 256782072 is about 635.6063582079.

The spelling of 256782072 in words is "two hundred fifty-six million, seven hundred eighty-two thousand, seventy-two".