253887680 has 28 divisors (see below), whose sum is σ = 604570800. Its totient is φ = 101554944.

The previous prime is 253887677. The next prime is 253887691. The reversal of 253887680 is 86788352.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

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, 396380 + ... + 397019.

Almost surely, 2^253887680 is an apocalyptic number.

253887680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253887680 is an abundant number, since it is smaller than the sum of its proper divisors (350683120).

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

253887680 is an equidigital number, since it uses as much as digits as its factorization.

253887680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793416 (or 793406 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 47.

The square root of 253887680 is about 15933.8532690621. The cubic root of 253887680 is about 633.2091895793.

The spelling of 253887680 in words is "two hundred fifty-three million, eight hundred eighty-seven thousand, six hundred eighty".