287980896 has 96 divisors (see below), whose sum is σ = 872702208. Its totient is φ = 81446400.

The previous prime is 287980873. The next prime is 287980937. The reversal of 287980896 is 698089782.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

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, 65751 + ... + 69993.

It is an arithmetic number, because the mean of its divisors is an integer number (9090648).

Almost surely, 2^287980896 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 287980896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (436351104).

287980896 is an abundant number, since it is smaller than the sum of its proper divisors (584721312).

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

287980896 is a wasteful number, since it uses less digits than its factorization.

287980896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4364 (or 4356 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 57.

The square root of 287980896 is about 16969.9998821450. Note that the first 3 decimals coincide. The cubic root of 287980896 is about 660.3708476000.

The spelling of 287980896 in words is "two hundred eighty-seven million, nine hundred eighty thousand, eight hundred ninety-six".