188889252 has 48 divisors (see below), whose sum is σ = 453220992. Its totient is φ = 61205760.

The previous prime is 188889229. The next prime is 188889257. The reversal of 188889252 is 252988881.

It is a super-2 number, since 2×188889252² = 71358299042239008, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 188889195 and 188889204.

It is not an unprimeable number, because it can be changed into a prime (188889257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60678 + ... + 63714.

It is an arithmetic number, because the mean of its divisors is an integer number (9442104).

Almost surely, 2^188889252 is an apocalyptic number.

188889252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

188889252 is an abundant number, since it is smaller than the sum of its proper divisors (264331740).

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

188889252 is a wasteful number, since it uses less digits than its factorization.

188889252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3188 (or 3186 counting only the distinct ones).

The product of its digits is 737280, while the sum is 51.

The square root of 188889252 is about 13743.6986288262. The cubic root of 188889252 is about 573.7672412360.

The spelling of 188889252 in words is "one hundred eighty-eight million, eight hundred eighty-nine thousand, two hundred fifty-two".