189423500 has 48 divisors (see below), whose sum is σ = 472809792. Its totient is φ = 64944000.

The previous prime is 189423499. The next prime is 189423529. The reversal of 189423500 is 5324981.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23561 + ... + 30560.

It is an arithmetic number, because the mean of its divisors is an integer number (9850204).

Almost surely, 2^189423500 is an apocalyptic number.

189423500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189423500 is an abundant number, since it is smaller than the sum of its proper divisors (283386292).

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

189423500 is a wasteful number, since it uses less digits than its factorization.

189423500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54147 (or 54135 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 189423500 is about 13763.1210123286. The cubic root of 189423500 is about 574.3076733575.

The spelling of 189423500 in words is "one hundred eighty-nine million, four hundred twenty-three thousand, five hundred".