189860880 has 80 divisors (see below), whose sum is σ = 642083904. Its totient is φ = 46026240.

The previous prime is 189860857. The next prime is 189860921. The reversal of 189860880 is 88068981.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33319 + ... + 38598.

Almost surely, 2^189860880 is an apocalyptic number.

189860880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189860880 is an abundant number, since it is smaller than the sum of its proper divisors (452223024).

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

189860880 is a wasteful number, since it uses less digits than its factorization.

189860880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71944 (or 71938 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 48.

The square root of 189860880 is about 13779.0014151970. The cubic root of 189860880 is about 574.7493602024.

The spelling of 189860880 in words is "one hundred eighty-nine million, eight hundred sixty thousand, eight hundred eighty".