189276280 has 16 divisors (see below), whose sum is σ = 425871720. Its totient is φ = 75710496.

The previous prime is 189276257. The next prime is 189276281. The reversal of 189276280 is 82672981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189276281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2365914 + ... + 2365993.

Almost surely, 2^189276280 is an apocalyptic number.

189276280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189276280 is an abundant number, since it is smaller than the sum of its proper divisors (236595440).

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

189276280 is a wasteful number, since it uses less digits than its factorization.

189276280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4731918 (or 4731914 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 189276280 is about 13757.7716218870. The cubic root of 189276280 is about 574.1588507648.

The spelling of 189276280 in words is "one hundred eighty-nine million, two hundred seventy-six thousand, two hundred eighty".