28386704 has 10 divisors (see below), whose sum is σ = 54999270. Its totient is φ = 14193344.

The previous prime is 28386689. The next prime is 28386727. The reversal of 28386704 is 40768382.

It can be written as a sum of positive squares in only one way, i.e., 27667600 + 719104 = 5260^2 + 848^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 887069 + ... + 887100.

It is an arithmetic number, because the mean of its divisors is an integer number (5499927).

Almost surely, 2^28386704 is an apocalyptic number.

It is an amenable number.

28386704 is a deficient number, since it is larger than the sum of its proper divisors (26612566).

28386704 is a wasteful number, since it uses less digits than its factorization.

28386704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1774177 (or 1774171 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 28386704 is about 5327.9174167774. The cubic root of 28386704 is about 305.0504404619.

The spelling of 28386704 in words is "twenty-eight million, three hundred eighty-six thousand, seven hundred four".