22446628 has 12 divisors (see below), whose sum is σ = 39569292. Its totient is φ = 11141120.

The previous prime is 22446623. The next prime is 22446629. The reversal of 22446628 is 82664422.

It can be written as a sum of positive squares in 2 ways, for example, as 17239104 + 5207524 = 4152^2 + 2282^2 .

It is a super-2 number, since 2×22446628² = 1007702217140768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22446593 and 22446602.

It is not an unprimeable number, because it can be changed into a prime (22446623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19933 + ... + 21028.

It is an arithmetic number, because the mean of its divisors is an integer number (3297441).

Almost surely, 2^22446628 is an apocalyptic number.

It is an amenable number.

22446628 is a deficient number, since it is larger than the sum of its proper divisors (17122664).

22446628 is a wasteful number, since it uses less digits than its factorization.

22446628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41102 (or 41100 counting only the distinct ones).

The product of its digits is 36864, while the sum is 34.

The square root of 22446628 is about 4737.7872472284. The cubic root of 22446628 is about 282.0874098196.

The spelling of 22446628 in words is "twenty-two million, four hundred forty-six thousand, six hundred twenty-eight".