289988252 has 12 divisors (see below), whose sum is σ = 510841296. Its totient is φ = 144033600.

The previous prime is 289988249. The next prime is 289988269. The reversal of 289988252 is 252889982.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 289988194 and 289988203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239453 + ... + 240660.

It is an arithmetic number, because the mean of its divisors is an integer number (42570108).

Almost surely, 2^289988252 is an apocalyptic number.

It is an amenable number.

289988252 is a deficient number, since it is larger than the sum of its proper divisors (220853044).

289988252 is a wasteful number, since it uses less digits than its factorization.

289988252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480268 (or 480266 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 53.

The square root of 289988252 is about 17029.0414292760. The cubic root of 289988252 is about 661.9016566064.

The spelling of 289988252 in words is "two hundred eighty-nine million, nine hundred eighty-eight thousand, two hundred fifty-two".