22063812 has 48 divisors (see below), whose sum is σ = 52960320. Its totient is φ = 7147008.

The previous prime is 22063799. The next prime is 22063819. The reversal of 22063812 is 21836022.

It is not an unprimeable number, because it can be changed into a prime (22063819) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77823 + ... + 78105.

It is an arithmetic number, because the mean of its divisors is an integer number (1103340).

Almost surely, 2^22063812 is an apocalyptic number.

It is an amenable number.

22063812 is an abundant number, since it is smaller than the sum of its proper divisors (30896508).

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

22063812 is a wasteful number, since it uses less digits than its factorization.

22063812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452 (or 450 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 22063812 is about 4697.2132163656. The cubic root of 22063812 is about 280.4745863014.

Adding to 22063812 its reverse (21836022), we get a palindrome (43899834).

The spelling of 22063812 in words is "twenty-two million, sixty-three thousand, eight hundred twelve".