288728886 has 16 divisors (see below), whose sum is σ = 577923264. Its totient is φ = 96165384.

The previous prime is 288728873. The next prime is 288728893. The reversal of 288728886 is 688827882.

288728886 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×288728886² = 166728739221601992, which contains 22 as substring.

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, 11056 + ... + 26451.

It is an arithmetic number, because the mean of its divisors is an integer number (36120204).

Almost surely, 2^288728886 is an apocalyptic number.

288728886 is an abundant number, since it is smaller than the sum of its proper divisors (289194378).

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

288728886 is a wasteful number, since it uses less digits than its factorization.

288728886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38795.

The product of its digits is 5505024, while the sum is 57.

The square root of 288728886 is about 16992.0241878359. The cubic root of 288728886 is about 660.9420935370.

The spelling of 288728886 in words is "two hundred eighty-eight million, seven hundred twenty-eight thousand, eight hundred eighty-six".