22146638 has 8 divisors (see below), whose sum is σ = 33268320. Its totient is φ = 11057200.

The previous prime is 22146637. The next prime is 22146659. The reversal of 22146638 is 83664122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22146637) 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, 6263 + ... + 9138.

It is an arithmetic number, because the mean of its divisors is an integer number (4158540).

Almost surely, 2^22146638 is an apocalyptic number.

22146638 is a deficient number, since it is larger than the sum of its proper divisors (11121682).

22146638 is a wasteful number, since it uses less digits than its factorization.

22146638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16122.

The product of its digits is 13824, while the sum is 32.

The square root of 22146638 is about 4706.0214619145. The cubic root of 22146638 is about 280.8251086846.

The spelling of 22146638 in words is "twenty-two million, one hundred forty-six thousand, six hundred thirty-eight".