252535638 has 8 divisors (see below), whose sum is σ = 505071288. Its totient is φ = 84178544.

The previous prime is 252535609. The next prime is 252535651. The reversal of 252535638 is 836535252.

It is a sphenic number, since it is the product of 3 distinct primes.

252535638 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 252535596 and 252535605.

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, 21044631 + ... + 21044642.

It is an arithmetic number, because the mean of its divisors is an integer number (63133911).

Almost surely, 2^252535638 is an apocalyptic number.

252535638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

252535638 is a wasteful number, since it uses less digits than its factorization.

252535638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42089278.

The product of its digits is 216000, while the sum is 39.

The square root of 252535638 is about 15891.3699220678. The cubic root of 252535638 is about 632.0831671651.

The spelling of 252535638 in words is "two hundred fifty-two million, five hundred thirty-five thousand, six hundred thirty-eight".