22740817 has 12 divisors (see below), whose sum is σ = 25221456. Its totient is φ = 20332920.

The previous prime is 22740811. The next prime is 22740833. The reversal of 22740817 is 71804722.

It is a de Polignac number, because none of the positive numbers 2^k-22740817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22740811) 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, 163534 + ... + 163672.

It is an arithmetic number, because the mean of its divisors is an integer number (2101788).

Almost surely, 2^22740817 is an apocalyptic number.

It is an amenable number.

22740817 is a deficient number, since it is larger than the sum of its proper divisors (2480639).

22740817 is a wasteful number, since it uses less digits than its factorization.

22740817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396 (or 257 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 22740817 is about 4768.7332699575. The cubic root of 22740817 is about 283.3144253434.

The spelling of 22740817 in words is "twenty-two million, seven hundred forty thousand, eight hundred seventeen".