189724 has 6 divisors (see below), whose sum is σ = 332024. Its totient is φ = 94860.

The previous prime is 189713. The next prime is 189733. The reversal of 189724 is 427981.

189724 is nontrivially palindromic in base 6.

189724 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

189724 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23712 + ... + 23719.

2¹⁸⁹⁷²⁴ is an apocalyptic number.

It is an amenable number.

189724 is a deficient number, since it is larger than the sum of its proper divisors (142300).

189724 is a wasteful number, since it uses less digits than its factorization.

189724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47435 (or 47433 counting only the distinct ones).

The product of its digits is 4032, while the sum is 31.

The square root of 189724 is about 435.5731855842. The cubic root of 189724 is about 57.4611205349.

The spelling of 189724 in words is "one hundred eighty-nine thousand, seven hundred twenty-four".