22272776 has 8 divisors (see below), whose sum is σ = 41761470. Its totient is φ = 11136384.

The previous prime is 22272749. The next prime is 22272793. The reversal of 22272776 is 67727222.

It can be written as a sum of positive squares in only one way, i.e., 21996100 + 276676 = 4690^2 + 526^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1392041 + ... + 1392056.

Almost surely, 2^22272776 is an apocalyptic number.

It is an amenable number.

22272776 is a deficient number, since it is larger than the sum of its proper divisors (19488694).

22272776 is a wasteful number, since it uses less digits than its factorization.

22272776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2784103 (or 2784099 counting only the distinct ones).

The product of its digits is 32928, while the sum is 35.

The square root of 22272776 is about 4719.4041996845. The cubic root of 22272776 is about 281.3572538428.

Adding to 22272776 its reverse (67727222), we get a palindrome (89999998).

The spelling of 22272776 in words is "twenty-two million, two hundred seventy-two thousand, seven hundred seventy-six".