288942856 has 32 divisors (see below), whose sum is σ = 553469760. Its totient is φ = 141365952.

The previous prime is 288942851. The next prime is 288942869. The reversal of 288942856 is 658249882.

It is not an unprimeable number, because it can be changed into a prime (288942851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221101 + ... + 222403.

It is an arithmetic number, because the mean of its divisors is an integer number (17295930).

Almost surely, 2^288942856 is an apocalyptic number.

It is an amenable number.

288942856 is a deficient number, since it is larger than the sum of its proper divisors (264526904).

288942856 is a wasteful number, since it uses less digits than its factorization.

288942856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1885 (or 1881 counting only the distinct ones).

The product of its digits is 2211840, while the sum is 52.

The square root of 288942856 is about 16998.3192110279. The cubic root of 288942856 is about 661.1053226264.

The spelling of 288942856 in words is "two hundred eighty-eight million, nine hundred forty-two thousand, eight hundred fifty-six".