22744749 has 8 divisors (see below), whose sum is σ = 30359680. Its totient is φ = 15146496.

The previous prime is 22744741. The next prime is 22744781. The reversal of 22744749 is 94744722.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22744749 - 2³ = 22744741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22744741) 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, 532 + ... + 6765.

It is an arithmetic number, because the mean of its divisors is an integer number (3794960).

Almost surely, 2^22744749 is an apocalyptic number.

It is an amenable number.

22744749 is a deficient number, since it is larger than the sum of its proper divisors (7614931).

22744749 is a wasteful number, since it uses less digits than its factorization.

22744749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8339.

The product of its digits is 112896, while the sum is 39.

The square root of 22744749 is about 4769.1455209503. The cubic root of 22744749 is about 283.3307532253.

The spelling of 22744749 in words is "twenty-two million, seven hundred forty-four thousand, seven hundred forty-nine".