189990260 has 24 divisors (see below), whose sum is σ = 404033280. Its totient is φ = 75033504.

The previous prime is 189990239. The next prime is 189990271. The reversal of 189990260 is 62099981.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58544 + ... + 61703.

It is an arithmetic number, because the mean of its divisors is an integer number (16834720).

Almost surely, 2^189990260 is an apocalyptic number.

189990260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189990260 is an abundant number, since it is smaller than the sum of its proper divisors (214043020).

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

189990260 is a wasteful number, since it uses less digits than its factorization.

189990260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120335 (or 120333 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 44.

The square root of 189990260 is about 13783.6954406284. The cubic root of 189990260 is about 574.8798841727.

The spelling of 189990260 in words is "one hundred eighty-nine million, nine hundred ninety thousand, two hundred sixty".