289877240 has 32 divisors (see below), whose sum is σ = 669854880. Its totient is φ = 112816512.

The previous prime is 289877221. The next prime is 289877297. The reversal of 289877240 is 42778982.

It is a happy number.

289877240 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 96452 + ... + 99411.

It is an arithmetic number, because the mean of its divisors is an integer number (20932965).

Almost surely, 2^289877240 is an apocalyptic number.

289877240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

289877240 is an abundant number, since it is smaller than the sum of its proper divisors (379977640).

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

289877240 is a wasteful number, since it uses less digits than its factorization.

289877240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195911 (or 195907 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 47.

The square root of 289877240 is about 17025.7816266978. The cubic root of 289877240 is about 661.8171837534.

The spelling of 289877240 in words is "two hundred eighty-nine million, eight hundred seventy-seven thousand, two hundred forty".