28715804 has 36 divisors (see below), whose sum is σ = 55062504. Its totient is φ = 13096512.

The previous prime is 28715803. The next prime is 28715807. The reversal of 28715804 is 40851782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28715803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72134 + ... + 72530.

It is an arithmetic number, because the mean of its divisors is an integer number (1529514).

Almost surely, 2^28715804 is an apocalyptic number.

It is an amenable number.

28715804 is a deficient number, since it is larger than the sum of its proper divisors (26346700).

28715804 is a wasteful number, since it uses less digits than its factorization.

28715804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534 (or 519 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 28715804 is about 5358.7129051667. The cubic root of 28715804 is about 306.2247768203.

The spelling of 28715804 in words is "twenty-eight million, seven hundred fifteen thousand, eight hundred four".