289673872 has 20 divisors (see below), whose sum is σ = 570445756. Its totient is φ = 142462080.

The previous prime is 289673849. The next prime is 289673873. The reversal of 289673872 is 278376982.

It can be written as a sum of positive squares in 2 ways, for example, as 59969536 + 229704336 = 7744^2 + 15156^2 .

It is not an unprimeable number, because it can be changed into a prime (289673873) 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, 147423 + ... + 149374.

Almost surely, 2^289673872 is an apocalyptic number.

It is an amenable number.

289673872 is a deficient number, since it is larger than the sum of its proper divisors (280771884).

289673872 is a wasteful number, since it uses less digits than its factorization.

289673872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296866 (or 296860 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 52.

The square root of 289673872 is about 17019.8082245365. The cubic root of 289673872 is about 661.6623780795.

The spelling of 289673872 in words is "two hundred eighty-nine million, six hundred seventy-three thousand, eight hundred seventy-two".