253423864 has 8 divisors (see below), whose sum is σ = 475169760. Its totient is φ = 126711928.

The previous prime is 253423799. The next prime is 253423873. The reversal of 253423864 is 468324352.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15838984 + ... + 15838999.

It is an arithmetic number, because the mean of its divisors is an integer number (59396220).

Almost surely, 2^253423864 is an apocalyptic number.

It is an amenable number.

253423864 is a deficient number, since it is larger than the sum of its proper divisors (221745896).

253423864 is a wasteful number, since it uses less digits than its factorization.

253423864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31677989 (or 31677985 counting only the distinct ones).

The product of its digits is 138240, while the sum is 37.

The square root of 253423864 is about 15919.2921953207. The cubic root of 253423864 is about 632.8233607228.

The spelling of 253423864 in words is "two hundred fifty-three million, four hundred twenty-three thousand, eight hundred sixty-four".