252464646 has 32 divisors (see below), whose sum is σ = 577801728. Its totient is φ = 72040320.

The previous prime is 252464581. The next prime is 252464659. The reversal of 252464646 is 646464252.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33591 + ... + 40413.

It is an arithmetic number, because the mean of its divisors is an integer number (18056304).

Almost surely, 2^252464646 is an apocalyptic number.

252464646 is an abundant number, since it is smaller than the sum of its proper divisors (325337082).

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

252464646 is a wasteful number, since it uses less digits than its factorization.

252464646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7716.

The product of its digits is 276480, while the sum is 39.

The square root of 252464646 is about 15889.1360998640. The cubic root of 252464646 is about 632.0239318903.

It can be divided in two parts, 25246 and 4646, that added together give a palindrome (29892).

The spelling of 252464646 in words is "two hundred fifty-two million, four hundred sixty-four thousand, six hundred forty-six".