287439360 has 160 divisors (see below), whose sum is σ = 989936640. Its totient is φ = 70729728.

The previous prime is 287439359. The next prime is 287439371. The reversal of 287439360 is 63934782.

It is a tau number, because it is divible by the number of its divisors (160).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98401 + ... + 101279.

It is an arithmetic number, because the mean of its divisors is an integer number (6187104).

Almost surely, 2^287439360 is an apocalyptic number.

287439360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 287439360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (494968320).

287439360 is an abundant number, since it is smaller than the sum of its proper divisors (702497280).

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

287439360 is a wasteful number, since it uses less digits than its factorization.

287439360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2918 (or 2902 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 42.

The square root of 287439360 is about 16954.0366874677. The cubic root of 287439360 is about 659.9566546373.

The spelling of 287439360 in words is "two hundred eighty-seven million, four hundred thirty-nine thousand, three hundred sixty".