189421632 has 56 divisors (see below), whose sum is σ = 556869600. Its totient is φ = 63139968.

The previous prime is 189421619. The next prime is 189421651. The reversal of 189421632 is 236124981.

189421632 is a `hidden beast` number, since 18 + 9 + 4 + 2 + 1 + 632 = 666.

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 an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53082 + ... + 56537.

It is an arithmetic number, because the mean of its divisors is an integer number (9944100).

Almost surely, 2^189421632 is an apocalyptic number.

189421632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

189421632 is an abundant number, since it is smaller than the sum of its proper divisors (367447968).

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

189421632 is a wasteful number, since it uses less digits than its factorization.

189421632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109640 (or 109624 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 189421632 is about 13763.0531496467. The cubic root of 189421632 is about 574.3057855061.

It can be divided in two parts, 189 and 421632, that added together give a triangular number (421821 = T₉₁₈).

The spelling of 189421632 in words is "one hundred eighty-nine million, four hundred twenty-one thousand, six hundred thirty-two".