22812146 has 12 divisors (see below), whose sum is σ = 39805038. Its totient is φ = 9776592.

The previous prime is 22812107. The next prime is 22812149. The reversal of 22812146 is 64121822.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 22458121 + 354025 = 4739^2 + 595^2 .

It is not an unprimeable number, because it can be changed into a prime (22812149) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 116291 + ... + 116486.

Almost surely, 2^22812146 is an apocalyptic number.

22812146 is a deficient number, since it is larger than the sum of its proper divisors (16992892).

22812146 is a wasteful number, since it uses less digits than its factorization.

22812146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232793 (or 232786 counting only the distinct ones).

The product of its digits is 1536, while the sum is 26.

The square root of 22812146 is about 4776.2062350782. The cubic root of 22812146 is about 283.6103314908.

Adding to 22812146 its reverse (64121822), we get a palindrome (86933968).

The spelling of 22812146 in words is "twenty-two million, eight hundred twelve thousand, one hundred forty-six".