22194538 has 8 divisors (see below), whose sum is σ = 33361632. Its totient is φ = 11073996.

The previous prime is 22194479. The next prime is 22194539. The reversal of 22194538 is 83549122.

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

It is not an unprimeable number, because it can be changed into a prime (22194539) 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, 10420 + ... + 12367.

It is an arithmetic number, because the mean of its divisors is an integer number (4170204).

Almost surely, 2^22194538 is an apocalyptic number.

22194538 is a deficient number, since it is larger than the sum of its proper divisors (11167094).

22194538 is a wasteful number, since it uses less digits than its factorization.

22194538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23276.

The product of its digits is 17280, while the sum is 34.

The square root of 22194538 is about 4711.1079376300. The cubic root of 22194538 is about 281.0274243655.

The spelling of 22194538 in words is "twenty-two million, one hundred ninety-four thousand, five hundred thirty-eight".