251308968 has 32 divisors (see below), whose sum is σ = 629246400. Its totient is φ = 83639808.

The previous prime is 251308963. The next prime is 251309053. The reversal of 251308968 is 869803152.

It is not an unprimeable number, because it can be changed into a prime (251308961) 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 7 ways as a sum of consecutive naturals, for example, 8373 + ... + 23931.

It is an arithmetic number, because the mean of its divisors is an integer number (19663950).

Almost surely, 2^251308968 is an apocalyptic number.

It is an amenable number.

251308968 is an abundant number, since it is smaller than the sum of its proper divisors (377937432).

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

251308968 is a wasteful number, since it uses less digits than its factorization.

251308968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16241 (or 16237 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 251308968 is about 15852.7274624905. The cubic root of 251308968 is about 631.0580758496.

The spelling of 251308968 in words is "two hundred fifty-one million, three hundred eight thousand, nine hundred sixty-eight".