252248720 has 40 divisors (see below), whose sum is σ = 620980344. Its totient is φ = 94963712.

The previous prime is 252248713. The next prime is 252248743. The reversal of 252248720 is 27842252.

It can be written as a sum of positive squares in 4 ways, for example, as 38738176 + 213510544 = 6224^2 + 14612^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91379 + ... + 94098.

Almost surely, 2^252248720 is an apocalyptic number.

252248720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252248720 is an abundant number, since it is smaller than the sum of its proper divisors (368731624).

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

252248720 is a wasteful number, since it uses less digits than its factorization.

252248720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185507 (or 185501 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 32.

The square root of 252248720 is about 15882.3398779903. The cubic root of 252248720 is about 631.8436963252.

The spelling of 252248720 in words is "two hundred fifty-two million, two hundred forty-eight thousand, seven hundred twenty".