28905796 has 12 divisors (see below), whose sum is σ = 51086700. Its totient is φ = 14309600.

The previous prime is 28905757. The next prime is 28905841. The reversal of 28905796 is 69750982.

It can be written as a sum of positive squares in 2 ways, for example, as 16402500 + 12503296 = 4050^2 + 3536^2 .

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, 35371 + ... + 36178.

It is an arithmetic number, because the mean of its divisors is an integer number (4257225).

Almost surely, 2^28905796 is an apocalyptic number.

It is an amenable number.

28905796 is a deficient number, since it is larger than the sum of its proper divisors (22180904).

28905796 is a wasteful number, since it uses less digits than its factorization.

28905796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71654 (or 71652 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 28905796 is about 5376.4110705935. The cubic root of 28905796 is about 306.8986498200.

The spelling of 28905796 in words is "twenty-eight million, nine hundred five thousand, seven hundred ninety-six".