289536028 has 24 divisors (see below), whose sum is σ = 519976688. Its totient is φ = 140990976.

The previous prime is 289536019. The next prime is 289536043. The reversal of 289536028 is 820635982.

It is a super-2 number, since 2×289536028² = 167662223020033568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

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, 61900 + ... + 66412.

Almost surely, 2^289536028 is an apocalyptic number.

It is an amenable number.

289536028 is a deficient number, since it is larger than the sum of its proper divisors (230440660).

289536028 is a wasteful number, since it uses less digits than its factorization.

289536028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4933 (or 4931 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 289536028 is about 17015.7582258329. The cubic root of 289536028 is about 661.5574087000.

The spelling of 289536028 in words is "two hundred eighty-nine million, five hundred thirty-six thousand, twenty-eight".