22743641 has 4 divisors (see below), whose sum is σ = 23358372. Its totient is φ = 22128912.

The previous prime is 22743607. The next prime is 22743649. The reversal of 22743641 is 14634722.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20894041 + 1849600 = 4571^2 + 1360^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22743641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22743649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 307310 + ... + 307383.

It is an arithmetic number, because the mean of its divisors is an integer number (5839593).

Almost surely, 2^22743641 is an apocalyptic number.

It is an amenable number.

22743641 is a deficient number, since it is larger than the sum of its proper divisors (614731).

22743641 is an equidigital number, since it uses as much as digits as its factorization.

22743641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614730.

The product of its digits is 8064, while the sum is 29.

The square root of 22743641 is about 4769.0293561688. The cubic root of 22743641 is about 283.3261523747.

The spelling of 22743641 in words is "twenty-two million, seven hundred forty-three thousand, six hundred forty-one".