253475720 has 16 divisors (see below), whose sum is σ = 570320460. Its totient is φ = 101390272.

The previous prime is 253475707. The next prime is 253475723. The reversal of 253475720 is 27574352.

It can be written as a sum of positive squares in 2 ways, for example, as 252746404 + 729316 = 15898^2 + 854^2 .

It is not an unprimeable number, because it can be changed into a prime (253475723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3168407 + ... + 3168486.

Almost surely, 2^253475720 is an apocalyptic number.

253475720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253475720 is an abundant number, since it is smaller than the sum of its proper divisors (316844740).

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

253475720 is a wasteful number, since it uses less digits than its factorization.

253475720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6336904 (or 6336900 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 35.

The square root of 253475720 is about 15920.9208276406. The cubic root of 253475720 is about 632.8665208915.

The spelling of 253475720 in words is "two hundred fifty-three million, four hundred seventy-five thousand, seven hundred twenty".