28273882 has 24 divisors (see below), whose sum is σ = 53132436. Its totient is φ = 11184768.

The previous prime is 28273871. The next prime is 28273901. The reversal of 28273882 is 28837282.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 28079401 + 194481 = 5299^2 + 441^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9823 + ... + 12370.

Almost surely, 2^28273882 is an apocalyptic number.

28273882 is a deficient number, since it is larger than the sum of its proper divisors (24858554).

28273882 is a wasteful number, since it uses less digits than its factorization.

28273882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22222 (or 22215 counting only the distinct ones).

The product of its digits is 86016, while the sum is 40.

The square root of 28273882 is about 5317.3190613316. The cubic root of 28273882 is about 304.6457662953.

The spelling of 28273882 in words is "twenty-eight million, two hundred seventy-three thousand, eight hundred eighty-two".