189320247 has 40 divisors (see below), whose sum is σ = 292926480. Its totient is φ = 121772160.

The previous prime is 189320233. The next prime is 189320249. The reversal of 189320247 is 742023981.

189320247 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 189320247 - 2⁷ = 189320119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189320249) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 361728 + ... + 362250.

It is an arithmetic number, because the mean of its divisors is an integer number (7323162).

Almost surely, 2^189320247 is an apocalyptic number.

189320247 is a deficient number, since it is larger than the sum of its proper divisors (103606233).

189320247 is a wasteful number, since it uses less digits than its factorization.

189320247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685 (or 676 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 189320247 is about 13759.3694259584. The cubic root of 189320247 is about 574.2033044558.

The spelling of 189320247 in words is "one hundred eighty-nine million, three hundred twenty thousand, two hundred forty-seven".