22231745 has 8 divisors (see below), whose sum is σ = 26706240. Its totient is φ = 17766640.

The previous prime is 22231723. The next prime is 22231757. The reversal of 22231745 is 54713222.

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

It is not a de Polignac number, because 22231745 - 2²⁴ = 5454529 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4910 + ... + 8280.

It is an arithmetic number, because the mean of its divisors is an integer number (3338280).

Almost surely, 2^22231745 is an apocalyptic number.

It is an amenable number.

22231745 is a deficient number, since it is larger than the sum of its proper divisors (4474495).

22231745 is a wasteful number, since it uses less digits than its factorization.

22231745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4695.

The product of its digits is 3360, while the sum is 26.

The square root of 22231745 is about 4715.0551428377. The cubic root of 22231745 is about 281.1843751414.

Adding to 22231745 its reverse (54713222), we get a palindrome (76944967).

The spelling of 22231745 in words is "twenty-two million, two hundred thirty-one thousand, seven hundred forty-five".