252724636 has 12 divisors (see below), whose sum is σ = 443373840. Its totient is φ = 126046400.

The previous prime is 252724597. The next prime is 252724639. The reversal of 252724636 is 636427252.

It is a junction number, because it is equal to n+sod(n) for n = 252724595 and 252724604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252724639) 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, 77176 + ... + 80383.

It is an arithmetic number, because the mean of its divisors is an integer number (36947820).

Almost surely, 2^252724636 is an apocalyptic number.

It is an amenable number.

252724636 is a deficient number, since it is larger than the sum of its proper divisors (190649204).

252724636 is a wasteful number, since it uses less digits than its factorization.

252724636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157964 (or 157962 counting only the distinct ones).

The product of its digits is 120960, while the sum is 37.

The square root of 252724636 is about 15897.3153708417. The cubic root of 252724636 is about 632.2408117993.

The spelling of 252724636 in words is "two hundred fifty-two million, seven hundred twenty-four thousand, six hundred thirty-six".