22726739 has 12 divisors (see below), whose sum is σ = 27993384. Its totient is φ = 18333504.

The previous prime is 22726729. The next prime is 22726763. The reversal of 22726739 is 93762722.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-22726739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22726729) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12809 + ... + 14474.

It is an arithmetic number, because the mean of its divisors is an integer number (2332782).

Almost surely, 2^22726739 is an apocalyptic number.

22726739 is a deficient number, since it is larger than the sum of its proper divisors (5266645).

22726739 is a wasteful number, since it uses less digits than its factorization.

22726739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27314 (or 27307 counting only the distinct ones).

The product of its digits is 63504, while the sum is 38.

The square root of 22726739 is about 4767.2569681107. The cubic root of 22726739 is about 283.2559501091.

The spelling of 22726739 in words is "twenty-two million, seven hundred twenty-six thousand, seven hundred thirty-nine".