28701604 has 12 divisors (see below), whose sum is σ = 50365084. Its totient is φ = 14311584.

The previous prime is 28701601. The next prime is 28701611. The reversal of 28701604 is 40610782.

It can be written as a sum of positive squares in 2 ways, for example, as 8988004 + 19713600 = 2998^2 + 4440^2 .

It is not an unprimeable number, because it can be changed into a prime (28701601) 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, 8127 + ... + 11110.

Almost surely, 2^28701604 is an apocalyptic number.

It is an amenable number.

28701604 is a deficient number, since it is larger than the sum of its proper divisors (21663480).

28701604 is a wasteful number, since it uses less digits than its factorization.

28701604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19614 (or 19612 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 28701604 is about 5357.3877963052. The cubic root of 28701604 is about 306.1742923230.

The spelling of 28701604 in words is "twenty-eight million, seven hundred one thousand, six hundred four".