28268713 has 8 divisors (see below), whose sum is σ = 32461920. Its totient is φ = 24346080.

The previous prime is 28268711. The next prime is 28268731. The reversal of 28268713 is 31786282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28268713 - 2¹ = 28268711 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28268711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67420 + ... + 67837.

It is an arithmetic number, because the mean of its divisors is an integer number (4057740).

Almost surely, 2^28268713 is an apocalyptic number.

It is an amenable number.

28268713 is a deficient number, since it is larger than the sum of its proper divisors (4193207).

28268713 is a wasteful number, since it uses less digits than its factorization.

28268713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135287.

The product of its digits is 32256, while the sum is 37.

The square root of 28268713 is about 5316.8329859043. The cubic root of 28268713 is about 304.6272001626.

The spelling of 28268713 in words is "twenty-eight million, two hundred sixty-eight thousand, seven hundred thirteen".