22728107 has 4 divisors (see below), whose sum is σ = 22901736. Its totient is φ = 22554480.

The previous prime is 22728091. The next prime is 22728109. The reversal of 22728107 is 70182722.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22728107 - 2⁴ = 22728091 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22728107.

It is not an unprimeable number, because it can be changed into a prime (22728109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86618 + ... + 86879.

It is an arithmetic number, because the mean of its divisors is an integer number (5725434).

Almost surely, 2^22728107 is an apocalyptic number.

22728107 is a deficient number, since it is larger than the sum of its proper divisors (173629).

22728107 is a wasteful number, since it uses less digits than its factorization.

22728107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173628.

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 22728107 is about 4767.4004446868. The cubic root of 22728107 is about 283.2616333759.

The spelling of 22728107 in words is "twenty-two million, seven hundred twenty-eight thousand, one hundred seven".