189332840 has 32 divisors (see below), whose sum is σ = 426504960. Its totient is φ = 75643200.

The previous prime is 189332831. The next prime is 189332863. The reversal of 189332840 is 48233981.

It is a junction number, because it is equal to n+sod(n) for n = 189332794 and 189332803.

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, 38945 + ... + 43535.

It is an arithmetic number, because the mean of its divisors is an integer number (13328280).

Almost surely, 2^189332840 is an apocalyptic number.

189332840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189332840 is an abundant number, since it is smaller than the sum of its proper divisors (237172120).

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

189332840 is a wasteful number, since it uses less digits than its factorization.

189332840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5633 (or 5629 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 189332840 is about 13759.8270337966. The cubic root of 189332840 is about 574.2160355856.

The spelling of 189332840 in words is "one hundred eighty-nine million, three hundred thirty-two thousand, eight hundred forty".