253128828 has 12 divisors (see below), whose sum is σ = 590633960. Its totient is φ = 84376272.

The previous prime is 253128797. The next prime is 253128829. The reversal of 253128828 is 828821352.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253128829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10547023 + ... + 10547046.

Almost surely, 2^253128828 is an apocalyptic number.

It is an amenable number.

253128828 is an abundant number, since it is smaller than the sum of its proper divisors (337505132).

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

253128828 is a wasteful number, since it uses less digits than its factorization.

253128828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21094076 (or 21094074 counting only the distinct ones).

The product of its digits is 61440, while the sum is 39.

The square root of 253128828 is about 15910.0228786762. The cubic root of 253128828 is about 632.5776877605.

The spelling of 253128828 in words is "two hundred fifty-three million, one hundred twenty-eight thousand, eight hundred twenty-eight".