251412432 has 40 divisors (see below), whose sum is σ = 655925280. Its totient is φ = 82972800.

The previous prime is 251412409. The next prime is 251412463. The reversal of 251412432 is 234214152.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21082 + ... + 30777.

It is an arithmetic number, because the mean of its divisors is an integer number (16398132).

Almost surely, 2^251412432 is an apocalyptic number.

It is an amenable number.

251412432 is an abundant number, since it is smaller than the sum of its proper divisors (404512848).

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

251412432 is a wasteful number, since it uses less digits than its factorization.

251412432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51971 (or 51965 counting only the distinct ones).

The product of its digits is 1920, while the sum is 24.

The square root of 251412432 is about 15855.9904137206. The cubic root of 251412432 is about 631.1446662528.

Adding to 251412432 its reverse (234214152), we get a palindrome (485626584).

The spelling of 251412432 in words is "two hundred fifty-one million, four hundred twelve thousand, four hundred thirty-two".