189497088 has 108 divisors (see below), whose sum is σ = 596116248. Its totient is φ = 57415680.

The previous prime is 189497059. The next prime is 189497177. The reversal of 189497088 is 880794981.

189497088 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21606 + ... + 29082.

Almost surely, 2^189497088 is an apocalyptic number.

189497088 is a gapful number since it is divisible by the number (18) 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 189497088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298058124).

189497088 is an abundant number, since it is smaller than the sum of its proper divisors (406619160).

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

189497088 is a wasteful number, since it uses less digits than its factorization.

189497088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7510 (or 7493 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 54.

The square root of 189497088 is about 13765.7941289270. The cubic root of 189497088 is about 574.3820335108.

The spelling of 189497088 in words is "one hundred eighty-nine million, four hundred ninety-seven thousand, eighty-eight".