253668020 has 12 divisors (see below), whose sum is σ = 532702884. Its totient is φ = 101467200.

The previous prime is 253668011. The next prime is 253668043. The reversal of 253668020 is 20866352.

It can be written as a sum of positive squares in 2 ways, for example, as 197177764 + 56490256 = 14042^2 + 7516^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6341681 + ... + 6341720.

It is an arithmetic number, because the mean of its divisors is an integer number (44391907).

Almost surely, 2^253668020 is an apocalyptic number.

253668020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253668020 is an abundant number, since it is smaller than the sum of its proper divisors (279034864).

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

253668020 is a wasteful number, since it uses less digits than its factorization.

253668020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12683410 (or 12683408 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 253668020 is about 15926.9589062068. The cubic root of 253668020 is about 633.0265223687.

The spelling of 253668020 in words is "two hundred fifty-three million, six hundred sixty-eight thousand, twenty".