289402480 has 40 divisors (see below), whose sum is σ = 682916112. Its totient is φ = 114031104.

The previous prime is 289402469. The next prime is 289402481. The reversal of 289402480 is 84204982.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289402481) 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, 21637 + ... + 32356.

Almost surely, 2^289402480 is an apocalyptic number.

289402480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

289402480 is an abundant number, since it is smaller than the sum of its proper divisors (393513632).

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

289402480 is a wasteful number, since it uses less digits than its factorization.

289402480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54073 (or 54067 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 289402480 is about 17011.8335284589. The cubic root of 289402480 is about 661.4556789814.

The spelling of 289402480 in words is "two hundred eighty-nine million, four hundred two thousand, four hundred eighty".