256361378 has 32 divisors (see below), whose sum is σ = 475426560. Its totient is φ = 100958400.

The previous prime is 256361323. The next prime is 256361383. The reversal of 256361378 is 873163652.

It is a super-2 number, since 2×256361378² = 131442312260117768, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38603 + ... + 44753.

It is an arithmetic number, because the mean of its divisors is an integer number (14857080).

Almost surely, 2^256361378 is an apocalyptic number.

256361378 is a deficient number, since it is larger than the sum of its proper divisors (219065182).

256361378 is a wasteful number, since it uses less digits than its factorization.

256361378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6402.

The product of its digits is 181440, while the sum is 41.

The square root of 256361378 is about 16011.2890798961. The cubic root of 256361378 is about 635.2590572978.

The spelling of 256361378 in words is "two hundred fifty-six million, three hundred sixty-one thousand, three hundred seventy-eight".