256994782 has 16 divisors (see below), whose sum is σ = 420901632. Its totient is φ = 116714520.

The previous prime is 256994767. The next prime is 256994813. The reversal of 256994782 is 287499652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24793 + ... + 33595.

It is an arithmetic number, because the mean of its divisors is an integer number (26306352).

Almost surely, 2^256994782 is an apocalyptic number.

256994782 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

256994782 is a deficient number, since it is larger than the sum of its proper divisors (163906850).

256994782 is a wasteful number, since it uses less digits than its factorization.

256994782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10143.

The product of its digits is 2177280, while the sum is 52.

The square root of 256994782 is about 16031.0567961067. The cubic root of 256994782 is about 635.7818150494.

The spelling of 256994782 in words is "two hundred fifty-six million, nine hundred ninety-four thousand, seven hundred eighty-two".