253622740 has 48 divisors (see below), whose sum is σ = 609840000. Its totient is φ = 86792832.

The previous prime is 253622723. The next prime is 253622791. The reversal of 253622740 is 47226352.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90886 + ... + 93634.

It is an arithmetic number, because the mean of its divisors is an integer number (12705000).

Almost surely, 2^253622740 is an apocalyptic number.

253622740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253622740 is an abundant number, since it is smaller than the sum of its proper divisors (356217260).

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

253622740 is a wasteful number, since it uses less digits than its factorization.

253622740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3424 (or 3422 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 31.

The square root of 253622740 is about 15925.5373535715. The cubic root of 253622740 is about 632.9888548343.

The spelling of 253622740 in words is "two hundred fifty-three million, six hundred twenty-two thousand, seven hundred forty".