22090342 has 4 divisors (see below), whose sum is σ = 33135516. Its totient is φ = 11045170.

The previous prime is 22090333. The next prime is 22090379. The reversal of 22090342 is 24309022.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5522584 + ... + 5522587.

It is an arithmetic number, because the mean of its divisors is an integer number (8283879).

Almost surely, 2^22090342 is an apocalyptic number.

22090342 is a deficient number, since it is larger than the sum of its proper divisors (11045174).

22090342 is a wasteful number, since it uses less digits than its factorization.

22090342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11045173.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 22090342 is about 4700.0363828379. The cubic root of 22090342 is about 280.5869574904.

Adding to 22090342 its reverse (24309022), we get a palindrome (46399364).

The spelling of 22090342 in words is "twenty-two million, ninety thousand, three hundred forty-two".