22143136 has 12 divisors (see below), whose sum is σ = 43594362. Its totient is φ = 11071552.

The previous prime is 22143133. The next prime is 22143137. The reversal of 22143136 is 63134122.

It can be written as a sum of positive squares in only one way, i.e., 18974736 + 3168400 = 4356^2 + 1780^2 .

It is not an unprimeable number, because it can be changed into a prime (22143133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345955 + ... + 346018.

Almost surely, 2^22143136 is an apocalyptic number.

It is an amenable number.

22143136 is a deficient number, since it is larger than the sum of its proper divisors (21451226).

22143136 is an equidigital number, since it uses as much as digits as its factorization.

22143136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691983 (or 691975 counting only the distinct ones).

The product of its digits is 864, while the sum is 22.

The square root of 22143136 is about 4705.6493707033. The cubic root of 22143136 is about 280.8103058152.

Adding to 22143136 its reverse (63134122), we get a palindrome (85277258).

The spelling of 22143136 in words is "twenty-two million, one hundred forty-three thousand, one hundred thirty-six".