22771224 has 48 divisors (see below), whose sum is σ = 70483920. Its totient is φ = 6505920.

The previous prime is 22771201. The next prime is 22771237. The reversal of 22771224 is 42217722.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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 in 11 ways as a sum of consecutive naturals, for example, 22087 + ... + 23094.

It is an arithmetic number, because the mean of its divisors is an integer number (1468415).

Almost surely, 2^22771224 is an apocalyptic number.

22771224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

22771224 is an abundant number, since it is smaller than the sum of its proper divisors (47712696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22771224 is a wasteful number, since it uses less digits than its factorization.

22771224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45200 (or 45193 counting only the distinct ones).

The product of its digits is 3136, while the sum is 27.

The square root of 22771224 is about 4771.9203681537. The cubic root of 22771224 is about 283.4406433967.

Adding to 22771224 its reverse (42217722), we get a palindrome (64988946).

The spelling of 22771224 in words is "twenty-two million, seven hundred seventy-one thousand, two hundred twenty-four".