28126888 has 16 divisors (see below), whose sum is σ = 53733780. Its totient is φ = 13797888.

The previous prime is 28126883. The next prime is 28126913. The reversal of 28126888 is 88862182.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 27688644 + 438244 = 5262^2 + 662^2 .

It is a super-2 number, since 2×28126888² = 1582243657129088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28126883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32745 + ... + 33592.

Almost surely, 2^28126888 is an apocalyptic number.

It is an amenable number.

28126888 is a deficient number, since it is larger than the sum of its proper divisors (25606892).

28126888 is a wasteful number, since it uses less digits than its factorization.

28126888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66396 (or 66392 counting only the distinct ones).

The product of its digits is 98304, while the sum is 43.

The square root of 28126888 is about 5303.4788582590. The cubic root of 28126888 is about 304.1169044841.

The spelling of 28126888 in words is "twenty-eight million, one hundred twenty-six thousand, eight hundred eighty-eight".