189278200 has 24 divisors (see below), whose sum is σ = 440072280. Its totient is φ = 75711200.

The previous prime is 189278179. The next prime is 189278227. The reversal of 189278200 is 2872981.

189278200 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 189278200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 472996 + ... + 473395.

It is an arithmetic number, because the mean of its divisors is an integer number (18336345).

Almost surely, 2^189278200 is an apocalyptic number.

189278200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189278200 is an abundant number, since it is smaller than the sum of its proper divisors (250794080).

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

189278200 is a wasteful number, since it uses less digits than its factorization.

189278200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946407 (or 946398 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 189278200 is about 13757.8414004523. The cubic root of 189278200 is about 574.1607921619.

The spelling of 189278200 in words is "one hundred eighty-nine million, two hundred seventy-eight thousand, two hundred".