253668008 has 48 divisors (see below), whose sum is σ = 531554400. Its totient is φ = 112549920.

The previous prime is 253667987. The next prime is 253668011. The reversal of 253668008 is 800866352.

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, 161933 + ... + 163491.

It is an arithmetic number, because the mean of its divisors is an integer number (11074050).

Almost surely, 2^253668008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 253668008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265777200).

253668008 is an abundant number, since it is smaller than the sum of its proper divisors (277886392).

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

253668008 is a wasteful number, since it uses less digits than its factorization.

253668008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1662 (or 1615 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 253668008 is about 15926.9585294870. The cubic root of 253668008 is about 633.0265123867.

The spelling of 253668008 in words is "two hundred fifty-three million, six hundred sixty-eight thousand, eight".