22273643 has 8 divisors (see below), whose sum is σ = 26795520. Its totient is φ = 18086760.

The previous prime is 22273633. The next prime is 22273663. The reversal of 22273643 is 34637222.

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 22273643 - 2⁴ = 22273627 is a prime.

It is a super-2 number, since 2×22273643² = 992230344982898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22273633) 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, 83603 + ... + 83868.

It is an arithmetic number, because the mean of its divisors is an integer number (3349440).

Almost surely, 2^22273643 is an apocalyptic number.

22273643 is a deficient number, since it is larger than the sum of its proper divisors (4521877).

22273643 is a wasteful number, since it uses less digits than its factorization.

22273643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167497.

The product of its digits is 12096, while the sum is 29.

The square root of 22273643 is about 4719.4960536057. The cubic root of 22273643 is about 281.3609045414.

The spelling of 22273643 in words is "twenty-two million, two hundred seventy-three thousand, six hundred forty-three".