189244432 has 20 divisors (see below), whose sum is σ = 394866220. Its totient is φ = 87343488.

The previous prime is 189244409. The next prime is 189244439. The reversal of 189244432 is 234442981.

It can be written as a sum of positive squares in 2 ways, for example, as 51322896 + 137921536 = 7164^2 + 11744^2 .

It is a junction number, because it is equal to n+sod(n) for n = 189244391 and 189244400.

It is not an unprimeable number, because it can be changed into a prime (189244439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 454707 + ... + 455122.

It is an arithmetic number, because the mean of its divisors is an integer number (19743311).

Almost surely, 2^189244432 is an apocalyptic number.

It is an amenable number.

189244432 is an abundant number, since it is smaller than the sum of its proper divisors (205621788).

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

189244432 is a wasteful number, since it uses less digits than its factorization.

189244432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909850 (or 909844 counting only the distinct ones).

The product of its digits is 55296, while the sum is 37.

The square root of 189244432 is about 13756.6141183069. The cubic root of 189244432 is about 574.1266459251.

The spelling of 189244432 in words is "one hundred eighty-nine million, two hundred forty-four thousand, four hundred thirty-two".