289232740 has 24 divisors (see below), whose sum is σ = 608069952. Its totient is φ = 115563360.

The previous prime is 289232719. The next prime is 289232743. The reversal of 289232740 is 47232982.

289232740 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 289232740.

It is not an unprimeable number, because it can be changed into a prime (289232743) 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, 11305 + ... + 26575.

It is an arithmetic number, because the mean of its divisors is an integer number (25336248).

Almost surely, 2^289232740 is an apocalyptic number.

289232740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

289232740 is an abundant number, since it is smaller than the sum of its proper divisors (318837212).

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

289232740 is a wasteful number, since it uses less digits than its factorization.

289232740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16227 (or 16225 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 289232740 is about 17006.8439164943. The cubic root of 289232740 is about 661.3263349565.

The spelling of 289232740 in words is "two hundred eighty-nine million, two hundred thirty-two thousand, seven hundred forty".