28314724 has 12 divisors (see below), whose sum is σ = 52465644. Its totient is φ = 13324544.

The previous prime is 28314721. The next prime is 28314739. The reversal of 28314724 is 42741382.

It can be written as a sum of positive squares in 2 ways, for example, as 17305600 + 11009124 = 4160^2 + 3318^2 .

It is not an unprimeable number, because it can be changed into a prime (28314721) 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, 208129 + ... + 208264.

It is an arithmetic number, because the mean of its divisors is an integer number (4372137).

Almost surely, 2^28314724 is an apocalyptic number.

It is an amenable number.

28314724 is a deficient number, since it is larger than the sum of its proper divisors (24150920).

28314724 is a wasteful number, since it uses less digits than its factorization.

28314724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416414 (or 416412 counting only the distinct ones).

The product of its digits is 10752, while the sum is 31.

The square root of 28314724 is about 5321.1581446148. The cubic root of 28314724 is about 304.7923840130.

The spelling of 28314724 in words is "twenty-eight million, three hundred fourteen thousand, seven hundred twenty-four".