252845690 has 16 divisors (see below), whose sum is σ = 455328000. Its totient is φ = 101092560.

The previous prime is 252845657. The next prime is 252845701. The reversal of 252845690 is 96548252.

It is a super-2 number, since 2×252845690² = 127861885903152200, 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, 25775 + ... + 34205.

It is an arithmetic number, because the mean of its divisors is an integer number (28458000).

Almost surely, 2^252845690 is an apocalyptic number.

252845690 is a deficient number, since it is larger than the sum of its proper divisors (202482310).

252845690 is a wasteful number, since it uses less digits than its factorization.

252845690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11437.

The product of its (nonzero) digits is 172800, while the sum is 41.

The square root of 252845690 is about 15901.1222874362. The cubic root of 252845690 is about 632.3417425510.

The spelling of 252845690 in words is "two hundred fifty-two million, eight hundred forty-five thousand, six hundred ninety".