22648994 has 4 divisors (see below), whose sum is σ = 33973494. Its totient is φ = 11324496.

The previous prime is 22648949. The next prime is 22648999. The reversal of 22648994 is 49984622.

It is a happy number.

22648994 is nontrivially palindromic in base 13.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12694969 + 9954025 = 3563^2 + 3155^2 .

It is not an unprimeable number, because it can be changed into a prime (22648999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5662247 + ... + 5662250.

Almost surely, 2^22648994 is an apocalyptic number.

22648994 is a deficient number, since it is larger than the sum of its proper divisors (11324500).

22648994 is a wasteful number, since it uses less digits than its factorization.

22648994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11324499.

The product of its digits is 248832, while the sum is 44.

The square root of 22648994 is about 4759.0959225466. The cubic root of 22648994 is about 282.9325880880.

The spelling of 22648994 in words is "twenty-two million, six hundred forty-eight thousand, nine hundred ninety-four".