253128812 has 6 divisors (see below), whose sum is σ = 442975428. Its totient is φ = 126564404.

The previous prime is 253128797. The next prime is 253128829. The reversal of 253128812 is 218821352.

It is a happy number.

253128812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×253128812³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31641098 + ... + 31641105.

It is an arithmetic number, because the mean of its divisors is an integer number (73829238).

Almost surely, 2^253128812 is an apocalyptic number.

It is an amenable number.

253128812 is a deficient number, since it is larger than the sum of its proper divisors (189846616).

253128812 is a wasteful number, since it uses less digits than its factorization.

253128812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63282207 (or 63282205 counting only the distinct ones).

The product of its digits is 7680, while the sum is 32.

The square root of 253128812 is about 15910.0223758485. The cubic root of 253128812 is about 632.5776744323.

The spelling of 253128812 in words is "two hundred fifty-three million, one hundred twenty-eight thousand, eight hundred twelve".