28104724 has 48 divisors (see below), whose sum is σ = 54476800. Its totient is φ = 12636000.

The previous prime is 28104701. The next prime is 28104733. The reversal of 28104724 is 42740182.

It is a super-2 number, since 2×28104724² = 1579751022232352, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28104692 and 28104701.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186049 + ... + 186199.

Almost surely, 2^28104724 is an apocalyptic number.

It is an amenable number.

28104724 is a deficient number, since it is larger than the sum of its proper divisors (26372076).

28104724 is a wasteful number, since it uses less digits than its factorization.

28104724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284 (or 282 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 28104724 is about 5301.3888746252. The cubic root of 28104724 is about 304.0370020750.

The spelling of 28104724 in words is "twenty-eight million, one hundred four thousand, seven hundred twenty-four".