28959588 has 54 divisors (see below), whose sum is σ = 85160166. Its totient is φ = 8273664.

The previous prime is 28959563. The next prime is 28959589. The reversal of 28959588 is 88595982.

28959588 is a `hidden beast` number, since 2 + 8 + 9 + 59 + 588 = 666.

It can be written as a sum of positive squares in only one way, i.e., 21734244 + 7225344 = 4662^2 + 2688^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28959589) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6445 + ... + 9972.

Almost surely, 2^28959588 is an apocalyptic number.

28959588 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28959588 is an abundant number, since it is smaller than the sum of its proper divisors (56200578).

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

28959588 is a wasteful number, since it uses less digits than its factorization.

28959588 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16441 (or 16429 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 54.

The square root of 28959588 is about 5381.4113390448. The cubic root of 28959588 is about 307.0889053449.

The spelling of 28959588 in words is "twenty-eight million, nine hundred fifty-nine thousand, five hundred eighty-eight".