28152808 has 16 divisors (see below), whose sum is σ = 52995780. Its totient is φ = 14020608.

The previous prime is 28152793. The next prime is 28152829. The reversal of 28152808 is 80825182.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 16305444 + 11847364 = 4038^2 + 3442^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4791 + ... + 8902.

Almost surely, 2^28152808 is an apocalyptic number.

It is an amenable number.

28152808 is a deficient number, since it is larger than the sum of its proper divisors (24842972).

28152808 is a wasteful number, since it uses less digits than its factorization.

28152808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13956 (or 13952 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 34.

The square root of 28152808 is about 5305.9219745488. The cubic root of 28152808 is about 304.2102942446.

The spelling of 28152808 in words is "twenty-eight million, one hundred fifty-two thousand, eight hundred eight".