289335020 has 24 divisors (see below), whose sum is σ = 654342864. Its totient is φ = 106831296.

The previous prime is 289334993. The next prime is 289335029. The reversal of 289335020 is 20533982.

It is not an unprimeable number, because it can be changed into a prime (289335029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 556154 + ... + 556673.

It is an arithmetic number, because the mean of its divisors is an integer number (27264286).

Almost surely, 2^289335020 is an apocalyptic number.

289335020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

289335020 is an abundant number, since it is smaller than the sum of its proper divisors (365007844).

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

289335020 is a wasteful number, since it uses less digits than its factorization.

289335020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112849 (or 1112847 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 289335020 is about 17009.8506754175. The cubic root of 289335020 is about 661.4042796664.

The spelling of 289335020 in words is "two hundred eighty-nine million, three hundred thirty-five thousand, twenty".