252189938 has 64 divisors (see below), whose sum is σ = 513257472. Its totient is φ = 89743680.

The previous prime is 252189923. The next prime is 252189979. The reversal of 252189938 is 839981252.

It is a junction number, because it is equal to n+sod(n) for n = 252189892 and 252189901.

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 31 ways as a sum of consecutive naturals, for example, 205595 + ... + 206817.

It is an arithmetic number, because the mean of its divisors is an integer number (8019648).

Almost surely, 2^252189938 is an apocalyptic number.

252189938 is an abundant number, since it is smaller than the sum of its proper divisors (261067534).

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

252189938 is a wasteful number, since it uses less digits than its factorization.

252189938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1359.

The product of its digits is 311040, while the sum is 47.

The square root of 252189938 is about 15880.4892242021. The cubic root of 252189938 is about 631.7946125987.

The spelling of 252189938 in words is "two hundred fifty-two million, one hundred eighty-nine thousand, nine hundred thirty-eight".