252670690 has 16 divisors (see below), whose sum is σ = 459312120. Its totient is φ = 100067200.

The previous prime is 252670681. The next prime is 252670727. The reversal of 252670690 is 96076252.

It can be written as a sum of positive squares in 4 ways, for example, as 243079281 + 9591409 = 15591^2 + 3097^2 .

It is a super-2 number, since 2×252670690² = 127684955170152200, which contains 22 as substring.

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, 124075 + ... + 126094.

Almost surely, 2^252670690 is an apocalyptic number.

252670690 is a deficient number, since it is larger than the sum of its proper divisors (206641430).

252670690 is a wasteful number, since it uses less digits than its factorization.

252670690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250277.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 252670690 is about 15895.6185787153. The cubic root of 252670690 is about 632.1958230579.

The spelling of 252670690 in words is "two hundred fifty-two million, six hundred seventy thousand, six hundred ninety".