189906080 has 96 divisors (see below), whose sum is σ = 552230784. Its totient is φ = 60097536.

The previous prime is 189906071. The next prime is 189906161. The reversal of 189906080 is 80609981.

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 15 ways as a sum of consecutive naturals, for example, 8039 + ... + 21081.

It is an arithmetic number, because the mean of its divisors is an integer number (5752404).

Almost surely, 2^189906080 is an apocalyptic number.

189906080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 189906080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276115392).

189906080 is an abundant number, since it is smaller than the sum of its proper divisors (362324704).

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

189906080 is a wasteful number, since it uses less digits than its factorization.

189906080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13078 (or 13070 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 41.

The square root of 189906080 is about 13780.6414945024. The cubic root of 189906080 is about 574.7949665955.

The spelling of 189906080 in words is "one hundred eighty-nine million, nine hundred six thousand, eighty".