28259713 has 4 divisors (see below), whose sum is σ = 28475568. Its totient is φ = 28043860.

The previous prime is 28259681. The next prime is 28259719. The reversal of 28259713 is 31795282.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28259713 - 2⁵ = 28259681 is a prime.

It is a super-2 number, since 2×28259713² = 1597222757684738, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28259719) 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 3 ways as a sum of consecutive naturals, for example, 107731 + ... + 107992.

It is an arithmetic number, because the mean of its divisors is an integer number (7118892).

Almost surely, 2^28259713 is an apocalyptic number.

It is an amenable number.

28259713 is a deficient number, since it is larger than the sum of its proper divisors (215855).

28259713 is a wasteful number, since it uses less digits than its factorization.

28259713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215854.

The product of its digits is 30240, while the sum is 37.

The square root of 28259713 is about 5315.9865500206. The cubic root of 28259713 is about 304.5948683545.

It can be divided in two parts, 282 and 59713, that added together give a palindrome (59995).

The spelling of 28259713 in words is "twenty-eight million, two hundred fifty-nine thousand, seven hundred thirteen".