253256668 has 24 divisors (see below), whose sum is σ = 508357472. Its totient is φ = 108143424.

The previous prime is 253256651. The next prime is 253256671. The reversal of 253256668 is 866652352.

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 7 ways as a sum of consecutive naturals, for example, 8571 + ... + 24082.

Almost surely, 2^253256668 is an apocalyptic number.

253256668 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

253256668 is an abundant number, since it is smaller than the sum of its proper divisors (255100804).

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

253256668 is a wasteful number, since it uses less digits than its factorization.

253256668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32941 (or 32939 counting only the distinct ones).

The product of its digits is 518400, while the sum is 43.

The square root of 253256668 is about 15914.0399647607. The cubic root of 253256668 is about 632.6841620304.

The spelling of 253256668 in words is "two hundred fifty-three million, two hundred fifty-six thousand, six hundred sixty-eight".