22726747 has 6 divisors (see below), whose sum is σ = 23287308. Its totient is φ = 22167684.

The previous prime is 22726729. The next prime is 22726763. The reversal of 22726747 is 74762722.

It is not a de Polignac number, because 22726747 - 2²³ = 14338139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22726247) 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 5 ways as a sum of consecutive naturals, for example, 30898 + ... + 31624.

It is an arithmetic number, because the mean of its divisors is an integer number (3881218).

Almost surely, 2^22726747 is an apocalyptic number.

22726747 is a deficient number, since it is larger than the sum of its proper divisors (560561).

22726747 is an frugal number, since it uses more digits than its factorization.

22726747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1497 (or 770 counting only the distinct ones).

The product of its digits is 65856, while the sum is 37.

The square root of 22726747 is about 4767.2578071676. The cubic root of 22726747 is about 283.2559833452.

The spelling of 22726747 in words is "twenty-two million, seven hundred twenty-six thousand, seven hundred forty-seven".