289228764 has 24 divisors (see below), whose sum is σ = 736219008. Its totient is φ = 87645040.

The previous prime is 289228763. The next prime is 289228777. The reversal of 289228764 is 467822982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289228763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1095432 + ... + 1095695.

It is an arithmetic number, because the mean of its divisors is an integer number (30675792).

Almost surely, 2^289228764 is an apocalyptic number.

It is an amenable number.

289228764 is an abundant number, since it is smaller than the sum of its proper divisors (446990244).

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

289228764 is a wasteful number, since it uses less digits than its factorization.

289228764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2191145 (or 2191143 counting only the distinct ones).

The product of its digits is 774144, while the sum is 48.

The square root of 289228764 is about 17006.7270219757. The cubic root of 289228764 is about 661.3233045878.

The spelling of 289228764 in words is "two hundred eighty-nine million, two hundred twenty-eight thousand, seven hundred sixty-four".