253223724 has 24 divisors (see below), whose sum is σ = 636306160. Its totient is φ = 77914944.

The previous prime is 253223723. The next prime is 253223741. The reversal of 253223724 is 427322352.

It is a junction number, because it is equal to n+sod(n) for n = 253223691 and 253223700.

It is not an unprimeable number, because it can be changed into a prime (253223723) 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, 811459 + ... + 811770.

Almost surely, 2^253223724 is an apocalyptic number.

It is an amenable number.

253223724 is an abundant number, since it is smaller than the sum of its proper divisors (383082436).

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

253223724 is a wasteful number, since it uses less digits than its factorization.

253223724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1623249 (or 1623247 counting only the distinct ones).

The product of its digits is 20160, while the sum is 30.

The square root of 253223724 is about 15913.0048702311. The cubic root of 253223724 is about 632.6567273452.

The spelling of 253223724 in words is "two hundred fifty-three million, two hundred twenty-three thousand, seven hundred twenty-four".