253911616 has 28 divisors (see below), whose sum is σ = 575836288. Its totient is φ = 108819072.

The previous prime is 253911601. The next prime is 253911629. The reversal of 253911616 is 616119352.

It is a tau number, because it is divible by the number of its divisors (28).

It is a super-2 number, since 2×253911616² = 128942217479462912, which contains 22 as substring.

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, 282936 + ... + 283831.

Almost surely, 2^253911616 is an apocalyptic number.

It is an amenable number.

253911616 is an abundant number, since it is smaller than the sum of its proper divisors (321924672).

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

253911616 is an equidigital number, since it uses as much as digits as its factorization.

253911616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566786 (or 566776 counting only the distinct ones).

The product of its digits is 9720, while the sum is 34.

The square root of 253911616 is about 15934.6043565568. The cubic root of 253911616 is about 633.2290881671.

The spelling of 253911616 in words is "two hundred fifty-three million, nine hundred eleven thousand, six hundred sixteen".