28618882 has 16 divisors (see below), whose sum is σ = 45142200. Its totient is φ = 13587840.

The previous prime is 28618873. The next prime is 28618901. The reversal of 28618882 is 28881682.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7834401 + 20784481 = 2799^2 + 4559^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 507 + ... + 7582.

Almost surely, 2^28618882 is an apocalyptic number.

28618882 is a deficient number, since it is larger than the sum of its proper divisors (16523318).

28618882 is a wasteful number, since it uses less digits than its factorization.

28618882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8181.

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

The square root of 28618882 is about 5349.6618584729. The cubic root of 28618882 is about 305.8798637009.

The spelling of 28618882 in words is "twenty-eight million, six hundred eighteen thousand, eight hundred eighty-two".