288389249 has 16 divisors (see below), whose sum is σ = 311614464. Its totient is φ = 266112000.

The previous prime is 288389177. The next prime is 288389279. The reversal of 288389249 is 942983882.

It is a cyclic number.

It is not a de Polignac number, because 288389249 - 2²⁰ = 287340673 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 288389249.

It is not an unprimeable number, because it can be changed into a prime (288389279) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 428177 + ... + 428849.

It is an arithmetic number, because the mean of its divisors is an integer number (19475904).

Almost surely, 2^288389249 is an apocalyptic number.

It is an amenable number.

288389249 is a deficient number, since it is larger than the sum of its proper divisors (23225215).

288389249 is a wasteful number, since it uses less digits than its factorization.

288389249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328.

The product of its digits is 1990656, while the sum is 53.

The square root of 288389249 is about 16982.0272346973. The cubic root of 288389249 is about 660.6828324812.

The spelling of 288389249 in words is "two hundred eighty-eight million, three hundred eighty-nine thousand, two hundred forty-nine".