22645234 has 4 divisors (see below), whose sum is σ = 33967854. Its totient is φ = 11322616.

The previous prime is 22645229. The next prime is 22645247. The reversal of 22645234 is 43254622.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43254622 = 2 ⋅21627311.

It can be written as a sum of positive squares in only one way, i.e., 21594609 + 1050625 = 4647^2 + 1025^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5661307 + ... + 5661310.

Almost surely, 2^22645234 is an apocalyptic number.

22645234 is a deficient number, since it is larger than the sum of its proper divisors (11322620).

22645234 is a wasteful number, since it uses less digits than its factorization.

22645234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11322619.

The product of its digits is 11520, while the sum is 28.

The square root of 22645234 is about 4758.7008731375. The cubic root of 22645234 is about 282.9169305065.

Adding to 22645234 its reverse (43254622), we get a palindrome (65899856).

The spelling of 22645234 in words is "twenty-two million, six hundred forty-five thousand, two hundred thirty-four".