22763266 has 4 divisors (see below), whose sum is σ = 34144902. Its totient is φ = 11381632.

The previous prime is 22763249. The next prime is 22763267. The reversal of 22763266 is 66236722.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66236722 = 2 ⋅33118361.

It can be written as a sum of positive squares in only one way, i.e., 12809241 + 9954025 = 3579^2 + 3155^2 .

It is not an unprimeable number, because it can be changed into a prime (22763267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5690815 + ... + 5690818.

Almost surely, 2^22763266 is an apocalyptic number.

22763266 is the 3018-th centered pentagonal number.

22763266 is a deficient number, since it is larger than the sum of its proper divisors (11381636).

22763266 is a wasteful number, since it uses less digits than its factorization.

22763266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11381635.

The product of its digits is 36288, while the sum is 34.

The square root of 22763266 is about 4771.0864590783. The cubic root of 22763266 is about 283.4076209667.

Adding to 22763266 its reverse (66236722), we get a palindrome (88999988).

The spelling of 22763266 in words is "twenty-two million, seven hundred sixty-three thousand, two hundred sixty-six".