256271590 has 16 divisors (see below), whose sum is σ = 461541888. Its totient is φ = 102452416.

The previous prime is 256271581. The next prime is 256271591. The reversal of 256271590 is 95172652.

It is a super-2 number, since 2×256271590² = 131350255682256200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256271591) 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, 15579 + ... + 27481.

It is an arithmetic number, because the mean of its divisors is an integer number (28846368).

Almost surely, 2^256271590 is an apocalyptic number.

256271590 is a deficient number, since it is larger than the sum of its proper divisors (205270298).

256271590 is a wasteful number, since it uses less digits than its factorization.

256271590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14063.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 256271590 is about 16008.4849376823. The cubic root of 256271590 is about 635.1848842678.

The spelling of 256271590 in words is "two hundred fifty-six million, two hundred seventy-one thousand, five hundred ninety".