28983904 has 24 divisors (see below), whose sum is σ = 57870288. Its totient is φ = 14286720.

The previous prime is 28983893. The next prime is 28983907. The reversal of 28983904 is 40938982.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28983907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4107 + ... + 8650.

It is an arithmetic number, because the mean of its divisors is an integer number (2411262).

Almost surely, 2^28983904 is an apocalyptic number.

It is an amenable number.

28983904 is a deficient number, since it is larger than the sum of its proper divisors (28886384).

28983904 is a wasteful number, since it uses less digits than its factorization.

28983904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12838 (or 12830 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 28983904 is about 5383.6701236238. The cubic root of 28983904 is about 307.1748306564.

The spelling of 28983904 in words is "twenty-eight million, nine hundred eighty-three thousand, nine hundred four".