189812232 has 48 divisors (see below), whose sum is σ = 515106540. Its totient is φ = 63143808.

The previous prime is 189812209. The next prime is 189812237. The reversal of 189812232 is 232218981.

It can be written as a sum of positive squares in 2 ways, for example, as 158608836 + 31203396 = 12594^2 + 5586^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (189812237) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37738 + ... + 42470.

Almost surely, 2^189812232 is an apocalyptic number.

189812232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

189812232 is an abundant number, since it is smaller than the sum of its proper divisors (325294308).

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

189812232 is a wasteful number, since it uses less digits than its factorization.

189812232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5302 (or 5295 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 189812232 is about 13777.2360072694. The cubic root of 189812232 is about 574.7002667200.

The spelling of 189812232 in words is "one hundred eighty-nine million, eight hundred twelve thousand, two hundred thirty-two".