22728713 has 8 divisors (see below), whose sum is σ = 26120640. Its totient is φ = 19373040.

The previous prime is 22728703. The next prime is 22728757. The reversal of 22728713 is 31782722.

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

It is a cyclic number.

It is not a de Polignac number, because 22728713 - 2⁴ = 22728697 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22728713.

It is not an unprimeable number, because it can be changed into a prime (22728703) 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, 7703 + ... + 10236.

It is an arithmetic number, because the mean of its divisors is an integer number (3265080).

Almost surely, 2^22728713 is an apocalyptic number.

It is an amenable number.

22728713 is a deficient number, since it is larger than the sum of its proper divisors (3391927).

22728713 is a wasteful number, since it uses less digits than its factorization.

22728713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18127.

The product of its digits is 9408, while the sum is 32.

The square root of 22728713 is about 4767.4640009129. The cubic root of 22728713 is about 283.2641508905.

The spelling of 22728713 in words is "twenty-two million, seven hundred twenty-eight thousand, seven hundred thirteen".