28492724 has 36 divisors (see below), whose sum is σ = 54616716. Its totient is φ = 12999168.

The previous prime is 28492721. The next prime is 28492733. The reversal of 28492724 is 42729482.

It can be written as a sum of positive squares in 6 ways, for example, as 11682724 + 16810000 = 3418^2 + 4100^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28492721) 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, 76202 + ... + 76574.

It is an arithmetic number, because the mean of its divisors is an integer number (1517131).

Almost surely, 2^28492724 is an apocalyptic number.

It is an amenable number.

28492724 is a deficient number, since it is larger than the sum of its proper divisors (26123992).

28492724 is a wasteful number, since it uses less digits than its factorization.

28492724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516 (or 501 counting only the distinct ones).

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

The square root of 28492724 is about 5337.8576226797. The cubic root of 28492724 is about 305.4297408975.

The spelling of 28492724 in words is "twenty-eight million, four hundred ninety-two thousand, seven hundred twenty-four".