252440224 has 12 divisors (see below), whose sum is σ = 496991754. Its totient is φ = 126220096.

The previous prime is 252440197. The next prime is 252440231. The reversal of 252440224 is 422044252.

It can be written as a sum of positive squares in only one way, i.e., 172659600 + 79780624 = 13140^2 + 8932^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3944347 + ... + 3944410.

Almost surely, 2^252440224 is an apocalyptic number.

It is an amenable number.

252440224 is a deficient number, since it is larger than the sum of its proper divisors (244551530).

252440224 is an equidigital number, since it uses as much as digits as its factorization.

252440224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7888767 (or 7888759 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 25.

The square root of 252440224 is about 15888.3675687592. The cubic root of 252440224 is about 632.0035517613.

Adding to 252440224 its reverse (422044252), we get a palindrome (674484476).

The spelling of 252440224 in words is "two hundred fifty-two million, four hundred forty thousand, two hundred twenty-four".