22744643 has 8 divisors (see below), whose sum is σ = 23193456. Its totient is φ = 22298400.

The previous prime is 22744639. The next prime is 22744649. The reversal of 22744643 is 34644722.

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 22744643 - 2² = 22744639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22744649) 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, 34505 + ... + 35157.

It is an arithmetic number, because the mean of its divisors is an integer number (2899182).

Almost surely, 2^22744643 is an apocalyptic number.

22744643 is a deficient number, since it is larger than the sum of its proper divisors (448813).

22744643 is an equidigital number, since it uses as much as digits as its factorization.

22744643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285.

The product of its digits is 32256, while the sum is 32.

The square root of 22744643 is about 4769.1344078355. The cubic root of 22744643 is about 283.3303130781.

The spelling of 22744643 in words is "twenty-two million, seven hundred forty-four thousand, six hundred forty-three".