28265713 has 16 divisors (see below), whose sum is σ = 34369920. Its totient is φ = 22692096.

The previous prime is 28265701. The next prime is 28265717. The reversal of 28265713 is 31756282.

It is a happy number.

It is not a de Polignac number, because 28265713 - 2⁵ = 28265681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28265717) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31570 + ... + 32452.

It is an arithmetic number, because the mean of its divisors is an integer number (2148120).

Almost surely, 2^28265713 is an apocalyptic number.

It is an amenable number.

28265713 is a deficient number, since it is larger than the sum of its proper divisors (6104207).

28265713 is a wasteful number, since it uses less digits than its factorization.

28265713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1176.

The product of its digits is 20160, while the sum is 34.

The square root of 28265713 is about 5316.5508555830. The cubic root of 28265713 is about 304.6164236558.

The spelling of 28265713 in words is "twenty-eight million, two hundred sixty-five thousand, seven hundred thirteen".