251944272 has 60 divisors (see below), whose sum is σ = 714051520. Its totient is φ = 82914624.

The previous prime is 251944271. The next prime is 251944331. The reversal of 251944272 is 272449152.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251944271) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 303 + ... + 22449.

Almost surely, 2^251944272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 251944272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (357025760).

251944272 is an abundant number, since it is smaller than the sum of its proper divisors (462107248).

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

251944272 is a wasteful number, since it uses less digits than its factorization.

251944272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22240 (or 22231 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 251944272 is about 15872.7525023230. The cubic root of 251944272 is about 631.5893957394.

The spelling of 251944272 in words is "two hundred fifty-one million, nine hundred forty-four thousand, two hundred seventy-two".