189529920 has 84 divisors (see below), whose sum is σ = 651913860. Its totient is φ = 50540544.

The previous prime is 189529903. The next prime is 189529933. The reversal of 189529920 is 29925981.

It can be written as a sum of positive squares in 2 ways, for example, as 133818624 + 55711296 = 11568^2 + 7464^2 .

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

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, 30025 + ... + 35784.

Almost surely, 2^189529920 is an apocalyptic number.

189529920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189529920 is an abundant number, since it is smaller than the sum of its proper divisors (462383940).

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

189529920 is a wasteful number, since it uses less digits than its factorization.

189529920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65832 (or 65819 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 45.

The square root of 189529920 is about 13766.9865983809. The cubic root of 189529920 is about 574.4152038040.

The spelling of 189529920 in words is "one hundred eighty-nine million, five hundred twenty-nine thousand, nine hundred twenty".