189088540 has 24 divisors (see below), whose sum is σ = 397449360. Its totient is φ = 75566208.

The previous prime is 189088489. The next prime is 189088573. The reversal of 189088540 is 45880981.

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, 21976 + ... + 29344.

It is an arithmetic number, because the mean of its divisors is an integer number (16560390).

Almost surely, 2^189088540 is an apocalyptic number.

189088540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189088540 is an abundant number, since it is smaller than the sum of its proper divisors (208360820).

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

189088540 is a wasteful number, since it uses less digits than its factorization.

189088540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8661 (or 8659 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 43.

The square root of 189088540 is about 13750.9468764882. The cubic root of 189088540 is about 573.9689550887.

The spelling of 189088540 in words is "one hundred eighty-nine million, eighty-eight thousand, five hundred forty".