22728727 has 8 divisors (see below), whose sum is σ = 26006400. Its totient is φ = 19458744.

The previous prime is 22728703. The next prime is 22728757. The reversal of 22728727 is 72782722.

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 22728727 - 2⁷ = 22728599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22728757) 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, 7524 + ... + 10102.

It is an arithmetic number, because the mean of its divisors is an integer number (3250800).

Almost surely, 2^22728727 is an apocalyptic number.

22728727 is a deficient number, since it is larger than the sum of its proper divisors (3277673).

22728727 is a wasteful number, since it uses less digits than its factorization.

22728727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3845.

The product of its digits is 43904, while the sum is 37.

The square root of 22728727 is about 4767.4654691985. The cubic root of 22728727 is about 283.2642090504.

The spelling of 22728727 in words is "twenty-two million, seven hundred twenty-eight thousand, seven hundred twenty-seven".