253940724 has 24 divisors (see below), whose sum is σ = 658365120. Its totient is φ = 84646872.

The previous prime is 253940707. The next prime is 253940737. The reversal of 253940724 is 427049352.

253940724 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

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, 1175544 + ... + 1175759.

It is an arithmetic number, because the mean of its divisors is an integer number (27431880).

Almost surely, 2^253940724 is an apocalyptic number.

It is an amenable number.

253940724 is an abundant number, since it is smaller than the sum of its proper divisors (404424396).

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

253940724 is a wasteful number, since it uses less digits than its factorization.

253940724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2351316 (or 2351308 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 253940724 is about 15935.5176884844. The cubic root of 253940724 is about 633.2532846813.

The spelling of 253940724 in words is "two hundred fifty-three million, nine hundred forty thousand, seven hundred twenty-four".