22641738 has 16 divisors (see below), whose sum is σ = 51752640. Its totient is φ = 6469056.

The previous prime is 22641737. The next prime is 22641757. The reversal of 22641738 is 83714622.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22641699 and 22641708.

It is not an unprimeable number, because it can be changed into a prime (22641737) 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 7 ways as a sum of consecutive naturals, for example, 269503 + ... + 269586.

It is an arithmetic number, because the mean of its divisors is an integer number (3234540).

Almost surely, 2^22641738 is an apocalyptic number.

22641738 is an abundant number, since it is smaller than the sum of its proper divisors (29110902).

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

22641738 is a wasteful number, since it uses less digits than its factorization.

22641738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539101.

The product of its digits is 16128, while the sum is 33.

The square root of 22641738 is about 4758.3335318155. Note that the first 3 decimals coincide. The cubic root of 22641738 is about 282.9023707322.

The spelling of 22641738 in words is "twenty-two million, six hundred forty-one thousand, seven hundred thirty-eight".