188484864 has 72 divisors (see below), whose sum is σ = 528087840. Its totient is φ = 59516928.

The previous prime is 188484859. The next prime is 188484889. The reversal of 188484864 is 468484881.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8134 + ... + 21050.

Almost surely, 2^188484864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 188484864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264043920).

188484864 is an abundant number, since it is smaller than the sum of its proper divisors (339602976).

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

188484864 is a wasteful number, since it uses less digits than its factorization.

188484864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12955 (or 12941 counting only the distinct ones).

The product of its digits is 1572864, while the sum is 51.

The square root of 188484864 is about 13728.9789860718. The cubic root of 188484864 is about 573.3574943246.

The spelling of 188484864 in words is "one hundred eighty-eight million, four hundred eighty-four thousand, eight hundred sixty-four".