28713804 has 72 divisors (see below), whose sum is σ = 79672320. Its totient is φ = 8021664.

The previous prime is 28713787. The next prime is 28713827. The reversal of 28713804 is 40831782.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27117 + ... + 28155.

It is an arithmetic number, because the mean of its divisors is an integer number (1106560).

Almost surely, 2^28713804 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28713804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39836160).

28713804 is an abundant number, since it is smaller than the sum of its proper divisors (50958516).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28713804 is a wasteful number, since it uses less digits than its factorization.

28713804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1107 (or 1098 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 28713804 is about 5358.5262899420. The cubic root of 28713804 is about 306.2176673349.

The spelling of 28713804 in words is "twenty-eight million, seven hundred thirteen thousand, eight hundred four".