289398256 has 40 divisors (see below), whose sum is σ = 655723904. Its totient is φ = 121141440.

The previous prime is 289398233. The next prime is 289398271. The reversal of 289398256 is 652893982.

It is a happy number.

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, 25230 + ... + 34861.

Almost surely, 2^289398256 is an apocalyptic number.

It is an amenable number.

289398256 is an abundant number, since it is smaller than the sum of its proper divisors (366325648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

289398256 is a wasteful number, since it uses less digits than its factorization.

289398256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60149 (or 60143 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 52.

The square root of 289398256 is about 17011.7093791306. The cubic root of 289398256 is about 661.4524608537.

The spelling of 289398256 in words is "two hundred eighty-nine million, three hundred ninety-eight thousand, two hundred fifty-six".