188828874 has 64 divisors (see below), whose sum is σ = 466529280. Its totient is φ = 56220480.

The previous prime is 188828839. The next prime is 188828917. The reversal of 188828874 is 478828881.

It is a super-2 number, since 2×188828874² = 71312687312215752, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 188828874.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17424 + ... + 26100.

It is an arithmetic number, because the mean of its divisors is an integer number (7289520).

Almost surely, 2^188828874 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 188828874, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233264640).

188828874 is an abundant number, since it is smaller than the sum of its proper divisors (277700406).

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

188828874 is a wasteful number, since it uses less digits than its factorization.

188828874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8732 (or 8726 counting only the distinct ones).

The product of its digits is 1835008, while the sum is 54.

The square root of 188828874 is about 13741.5018829821. The cubic root of 188828874 is about 573.7061002765.

The spelling of 188828874 in words is "one hundred eighty-eight million, eight hundred twenty-eight thousand, eight hundred seventy-four".