189284472 has 64 divisors (see below), whose sum is σ = 566244000. Its totient is φ = 58240512.

The previous prime is 189284467. The next prime is 189284497. The reversal of 189284472 is 274482981.

189284472 is a `hidden beast` number, since 18 + 92 + 84 + 472 = 666.

It is a super-2 number, since 2×189284472² = 71657222680637568, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30897 + ... + 36512.

Almost surely, 2^189284472 is an apocalyptic number.

189284472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

189284472 is an abundant number, since it is smaller than the sum of its proper divisors (376959528).

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

189284472 is a wasteful number, since it uses less digits than its factorization.

189284472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67437 (or 67427 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 189284472 is about 13758.0693412993. The cubic root of 189284472 is about 574.1671339677.

The spelling of 189284472 in words is "one hundred eighty-nine million, two hundred eighty-four thousand, four hundred seventy-two".