252868390 has 16 divisors (see below), whose sum is σ = 456207840. Its totient is φ = 100915200.

The previous prime is 252868367. The next prime is 252868393. The reversal of 252868390 is 93868252.

It is a super-2 number, since 2×252868390² = 127884845322384200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252868393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24411 + ... + 33190.

It is an arithmetic number, because the mean of its divisors is an integer number (28512990).

Almost surely, 2^252868390 is an apocalyptic number.

252868390 is a deficient number, since it is larger than the sum of its proper divisors (203339450).

252868390 is a wasteful number, since it uses less digits than its factorization.

252868390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58047.

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 252868390 is about 15901.8360575124. The cubic root of 252868390 is about 632.3606654601.

The spelling of 252868390 in words is "two hundred fifty-two million, eight hundred sixty-eight thousand, three hundred ninety".