252420664 has 32 divisors (see below), whose sum is σ = 487872000. Its totient is φ = 122365152.

The previous prime is 252420629. The next prime is 252420671. The reversal of 252420664 is 466024252.

It is a super-2 number, since 2×252420664² = 127432383228401792, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45177 + ... + 50455.

It is an arithmetic number, because the mean of its divisors is an integer number (15246000).

Almost surely, 2^252420664 is an apocalyptic number.

It is an amenable number.

252420664 is a deficient number, since it is larger than the sum of its proper divisors (235451336).

252420664 is a wasteful number, since it uses less digits than its factorization.

252420664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5467 (or 5463 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 252420664 is about 15887.7520121633. The cubic root of 252420664 is about 631.9872280173.

The spelling of 252420664 in words is "two hundred fifty-two million, four hundred twenty thousand, six hundred sixty-four".