22191742 has 8 divisors (see below), whose sum is σ = 34099632. Its totient is φ = 10825200.

The previous prime is 22191737. The next prime is 22191751. The reversal of 22191742 is 24719122.

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 22191742.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135234 + ... + 135397.

It is an arithmetic number, because the mean of its divisors is an integer number (4262454).

Almost surely, 2^22191742 is an apocalyptic number.

22191742 is a deficient number, since it is larger than the sum of its proper divisors (11907890).

22191742 is a wasteful number, since it uses less digits than its factorization.

22191742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270674.

The product of its digits is 2016, while the sum is 28.

The square root of 22191742 is about 4710.8111828007. The cubic root of 22191742 is about 281.0156228781.

The spelling of 22191742 in words is "twenty-two million, one hundred ninety-one thousand, seven hundred forty-two".