252561328 has 40 divisors (see below), whose sum is σ = 497276208. Its totient is φ = 124250112.

The previous prime is 252561313. The next prime is 252561329. The reversal of 252561328 is 823165252.

It is a super-2 number, since 2×252561328² = 127574448802247168, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 252561293 and 252561302.

It is not an unprimeable number, because it can be changed into a prime (252561329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 294276 + ... + 295132.

Almost surely, 2^252561328 is an apocalyptic number.

It is an amenable number.

252561328 is a deficient number, since it is larger than the sum of its proper divisors (244714880).

252561328 is a wasteful number, since it uses less digits than its factorization.

252561328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1141 (or 1135 counting only the distinct ones).

The product of its digits is 28800, while the sum is 34.

The square root of 252561328 is about 15892.1782018703. The cubic root of 252561328 is about 632.1046000027.

The spelling of 252561328 in words is "two hundred fifty-two million, five hundred sixty-one thousand, three hundred twenty-eight".