253634944 has 16 divisors (see below), whose sum is σ = 505288620. Its totient is φ = 126817408.

The previous prime is 253634929. The next prime is 253634947. The reversal of 253634944 is 449436352.

It is a tau number, because it is divible by the number of its divisors (16).

It is a junction number, because it is equal to n+sod(n) for n = 253634897 and 253634906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253634947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 990634 + ... + 990889.

Almost surely, 2^253634944 is an apocalyptic number.

It is an amenable number.

253634944 is a deficient number, since it is larger than the sum of its proper divisors (251653676).

253634944 is an equidigital number, since it uses as much as digits as its factorization.

253634944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1981537 (or 1981525 counting only the distinct ones).

The product of its digits is 311040, while the sum is 40.

The square root of 253634944 is about 15925.9205071481. The cubic root of 253634944 is about 632.9990075413. Note that the first 3 decimals are identical.

The spelling of 253634944 in words is "two hundred fifty-three million, six hundred thirty-four thousand, nine hundred forty-four".