189553040 has 20 divisors (see below), whose sum is σ = 440711004. Its totient is φ = 75821184.

The previous prime is 189553033. The next prime is 189553057. The reversal of 189553040 is 40355981.

It can be written as a sum of positive squares in 2 ways, for example, as 145250704 + 44302336 = 12052^2 + 6656^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1184627 + ... + 1184786.

Almost surely, 2^189553040 is an apocalyptic number.

189553040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189553040 is an abundant number, since it is smaller than the sum of its proper divisors (251157964).

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

189553040 is a wasteful number, since it uses less digits than its factorization.

189553040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2369426 (or 2369420 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 189553040 is about 13767.8262627039. The cubic root of 189553040 is about 574.4385597286.

The spelling of 189553040 in words is "one hundred eighty-nine million, five hundred fifty-three thousand, forty".