22718142 has 12 divisors (see below), whose sum is σ = 49222680. Its totient is φ = 7572708.

The previous prime is 22718123. The next prime is 22718153. The reversal of 22718142 is 24181722.

It is a super-2 number, since 2×22718142² = 1032227951864328, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 631042 + ... + 631077.

It is an arithmetic number, because the mean of its divisors is an integer number (4101890).

Almost surely, 2^22718142 is an apocalyptic number.

22718142 is an abundant number, since it is smaller than the sum of its proper divisors (26504538).

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

22718142 is a wasteful number, since it uses less digits than its factorization.

22718142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1262127 (or 1262124 counting only the distinct ones).

The product of its digits is 1792, while the sum is 27.

The square root of 22718142 is about 4766.3552112699. The cubic root of 22718142 is about 283.2202292119.

Adding to 22718142 its reverse (24181722), we get a palindrome (46899864).

The spelling of 22718142 in words is "twenty-two million, seven hundred eighteen thousand, one hundred forty-two".