28615936 has 18 divisors (see below), whose sum is σ = 57120602. Its totient is φ = 14307840.

The previous prime is 28615931. The next prime is 28615963. The reversal of 28615936 is 63951682.

It can be written as a sum of positive squares in only one way, i.e., 28558336 + 57600 = 5344^2 + 240^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28615931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55635 + ... + 56146.

Almost surely, 2^28615936 is an apocalyptic number.

It is an amenable number.

28615936 is a deficient number, since it is larger than the sum of its proper divisors (28504666).

28615936 is an equidigital number, since it uses as much as digits as its factorization.

28615936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111797 (or 111783 counting only the distinct ones).

The product of its digits is 77760, while the sum is 40.

The square root of 28615936 is about 5349.3865068810. The cubic root of 28615936 is about 305.8693676817.

The spelling of 28615936 in words is "twenty-eight million, six hundred fifteen thousand, nine hundred thirty-six".