288055728 has 30 divisors (see below), whose sum is σ = 806156364. Its totient is φ = 96018528.

The previous prime is 288055727. The next prime is 288055739. The reversal of 288055728 is 827550882.

It is a super-2 number, since 2×288055728² = 165952204867219968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (288055721) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1000050 + ... + 1000337.

Almost surely, 2^288055728 is an apocalyptic number.

It is an amenable number.

288055728 is an abundant number, since it is smaller than the sum of its proper divisors (518100636).

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

288055728 is a wasteful number, since it uses less digits than its factorization.

288055728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2000401 (or 2000392 counting only the distinct ones).

The product of its (nonzero) digits is 358400, while the sum is 45.

The square root of 288055728 is about 16972.2045710037. The cubic root of 288055728 is about 660.4280418934.

The spelling of 288055728 in words is "two hundred eighty-eight million, fifty-five thousand, seven hundred twenty-eight".