189428466 has 16 divisors (see below), whose sum is σ = 386005824. Its totient is φ = 61951344.

The previous prime is 189428417. The next prime is 189428479. The reversal of 189428466 is 664824981.

It is a super-2 number, since 2×189428466² = 71766287462226312, which contains 22 as substring.

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, 297526 + ... + 298161.

It is an arithmetic number, because the mean of its divisors is an integer number (24125364).

Almost surely, 2^189428466 is an apocalyptic number.

189428466 is an abundant number, since it is smaller than the sum of its proper divisors (196577358).

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

189428466 is a wasteful number, since it uses less digits than its factorization.

189428466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595745.

The product of its digits is 663552, while the sum is 48.

The square root of 189428466 is about 13763.3014208074. The cubic root of 189428466 is about 574.3126920712.

The spelling of 189428466 in words is "one hundred eighty-nine million, four hundred twenty-eight thousand, four hundred sixty-six".