252664340 has 12 divisors (see below), whose sum is σ = 530595156. Its totient is φ = 101065728.

The previous prime is 252664301. The next prime is 252664351. The reversal of 252664340 is 43466252.

252664340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 131928196 + 120736144 = 11486^2 + 10988^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 252664297 and 252664306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6316589 + ... + 6316628.

It is an arithmetic number, because the mean of its divisors is an integer number (44216263).

Almost surely, 2^252664340 is an apocalyptic number.

252664340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252664340 is an abundant number, since it is smaller than the sum of its proper divisors (277930816).

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

252664340 is a wasteful number, since it uses less digits than its factorization.

252664340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12633226 (or 12633224 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 32.

The square root of 252664340 is about 15895.4188368850. The cubic root of 252664340 is about 632.1905269983.

It can be divided in two parts, 2526 and 64340, that added together give a palindrome (66866).

The spelling of 252664340 in words is "two hundred fifty-two million, six hundred sixty-four thousand, three hundred forty".