28072808 has 32 divisors (see below), whose sum is σ = 54595200. Its totient is φ = 13523328.

The previous prime is 28072789. The next prime is 28072813. The reversal of 28072808 is 80827082.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 26660 + ... + 27692.

It is an arithmetic number, because the mean of its divisors is an integer number (1706100).

Almost surely, 2^28072808 is an apocalyptic number.

It is an amenable number.

28072808 is a deficient number, since it is larger than the sum of its proper divisors (26522392).

28072808 is a wasteful number, since it uses less digits than its factorization.

28072808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1161 (or 1157 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 35.

The square root of 28072808 is about 5298.3778649696. The cubic root of 28072808 is about 303.9218693490.

The spelling of 28072808 in words is "twenty-eight million, seventy-two thousand, eight hundred eight".