251616832 has 28 divisors (see below), whose sum is σ = 515412736. Its totient is φ = 121749120.

The previous prime is 251616797. The next prime is 251616839. The reversal of 251616832 is 238616152.

It is a super-2 number, since 2×251616832² = 126622060291432448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (251616839) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 61428 + ... + 65395.

Almost surely, 2^251616832 is an apocalyptic number.

It is an amenable number.

251616832 is an abundant number, since it is smaller than the sum of its proper divisors (263795904).

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

251616832 is a wasteful number, since it uses less digits than its factorization.

251616832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126866 (or 126856 counting only the distinct ones).

The product of its digits is 17280, while the sum is 34.

The square root of 251616832 is about 15862.4346176746. The cubic root of 251616832 is about 631.3156615421.

The spelling of 251616832 in words is "two hundred fifty-one million, six hundred sixteen thousand, eight hundred thirty-two".