253386864 has 60 divisors (see below), whose sum is σ = 710892000. Its totient is φ = 84252672.

The previous prime is 253386821. The next prime is 253386877. The reversal of 253386864 is 468683352.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62697 + ... + 66615.

It is an arithmetic number, because the mean of its divisors is an integer number (11848200).

Almost surely, 2^253386864 is an apocalyptic number.

253386864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

253386864 is an abundant number, since it is smaller than the sum of its proper divisors (457505136).

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

253386864 is a wasteful number, since it uses less digits than its factorization.

253386864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4382 (or 4373 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

The square root of 253386864 is about 15918.1300409313. The cubic root of 253386864 is about 632.7925617239.

The spelling of 253386864 in words is "two hundred fifty-three million, three hundred eighty-six thousand, eight hundred sixty-four".