288735228 has 18 divisors (see below), whose sum is σ = 729858584. Its totient is φ = 96245064.

The previous prime is 288735193. The next prime is 288735247. The reversal of 288735228 is 822537882.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4010176 + ... + 4010247.

Almost surely, 2^288735228 is an apocalyptic number.

It is an amenable number.

288735228 is an abundant number, since it is smaller than the sum of its proper divisors (441123356).

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

288735228 is a wasteful number, since it uses less digits than its factorization.

288735228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8020433 (or 8020428 counting only the distinct ones).

The product of its digits is 430080, while the sum is 45.

The square root of 288735228 is about 16992.2108037771. The cubic root of 288735228 is about 660.9469327527.

The spelling of 288735228 in words is "two hundred eighty-eight million, seven hundred thirty-five thousand, two hundred twenty-eight".