22638142 has 8 divisors (see below), whose sum is σ = 34020936. Its totient is φ = 11297832.

The previous prime is 22638127. The next prime is 22638149. The reversal of 22638142 is 24183622.

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

It is a self number, because there is not a number n which added to its sum of digits gives 22638142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22638149) 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, 9253 + ... + 11440.

It is an arithmetic number, because the mean of its divisors is an integer number (4252617).

Almost surely, 2^22638142 is an apocalyptic number.

22638142 is a deficient number, since it is larger than the sum of its proper divisors (11382794).

22638142 is a wasteful number, since it uses less digits than its factorization.

22638142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21242.

The product of its digits is 4608, while the sum is 28.

The square root of 22638142 is about 4757.9556534293. The cubic root of 22638142 is about 282.8873929246.

The spelling of 22638142 in words is "twenty-two million, six hundred thirty-eight thousand, one hundred forty-two".