189290 has 16 divisors (see below), whose sum is σ = 355968. Its totient is φ = 72336.

The previous prime is 189271. The next prime is 189307. The reversal of 189290 is 92981.

It is an alternating number because its digits alternate between odd and even.

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, 182 + ... + 641.

It is an arithmetic number, because the mean of its divisors is an integer number (22248).

2¹⁸⁹²⁹⁰ is an apocalyptic number.

189290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

189290 is a deficient number, since it is larger than the sum of its proper divisors (166678).

189290 is a wasteful number, since it uses less digits than its factorization.

189290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 189290 is about 435.0747062287. The cubic root of 189290 is about 57.4172723377.

The spelling of 189290 in words is "one hundred eighty-nine thousand, two hundred ninety".