28088488 has 24 divisors (see below), whose sum is σ = 55950750. Its totient is φ = 13217024.

The previous prime is 28088483. The next prime is 28088491. The reversal of 28088488 is 88488082.

It can be written as a sum of positive squares in 3 ways, for example, as 26604964 + 1483524 = 5158^2 + 1218^2 .

It is a super-2 number, since 2×28088488² = 1577926316252288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28088483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3763 + ... + 8386.

Almost surely, 2^28088488 is an apocalyptic number.

It is an amenable number.

28088488 is a deficient number, since it is larger than the sum of its proper divisors (27862262).

28088488 is a wasteful number, since it uses less digits than its factorization.

28088488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12189 (or 12168 counting only the distinct ones).

The product of its (nonzero) digits is 262144, while the sum is 46.

The square root of 28088488 is about 5299.8573565710. The cubic root of 28088488 is about 303.9784437624.

The spelling of 28088488 in words is "twenty-eight million, eighty-eight thousand, four hundred eighty-eight".