28820504 has 16 divisors (see below), whose sum is σ = 54121200. Its totient is φ = 14388192.

The previous prime is 28820503. The next prime is 28820513. The reversal of 28820504 is 40502882.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28820503) 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, 3677 + ... + 8435.

It is an arithmetic number, because the mean of its divisors is an integer number (3382575).

Almost surely, 2^28820504 is an apocalyptic number.

It is an amenable number.

28820504 is a deficient number, since it is larger than the sum of its proper divisors (25300696).

28820504 is a wasteful number, since it uses less digits than its factorization.

28820504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5522 (or 5518 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 29.

The square root of 28820504 is about 5368.4731535139. The cubic root of 28820504 is about 306.5964983338.

The spelling of 28820504 in words is "twenty-eight million, eight hundred twenty thousand, five hundred four".