189478080 has 168 divisors, whose sum is σ = 711092304. Its totient is φ = 45926400.

The previous prime is 189478067. The next prime is 189478099. The reversal of 189478080 is 80874981.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28690 + ... + 34670.

Almost surely, 2^189478080 is an apocalyptic number.

189478080 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 189478080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (355546152).

189478080 is an abundant number, since it is smaller than the sum of its proper divisors (521614224).

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

189478080 is a wasteful number, since it uses less digits than its factorization.

189478080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6015 (or 6002 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The square root of 189478080 is about 13765.1037046584. The cubic root of 189478080 is about 574.3628279056.

The spelling of 189478080 in words is "one hundred eighty-nine million, four hundred seventy-eight thousand, eighty".