22206442 has 8 divisors (see below), whose sum is σ = 33336576. Its totient is φ = 11094252.

The previous prime is 22206433. The next prime is 22206449. The reversal of 22206442 is 24460222.

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 (22206449) 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, 778 + ... + 6709.

It is an arithmetic number, because the mean of its divisors is an integer number (4167072).

Almost surely, 2^22206442 is an apocalyptic number.

22206442 is a deficient number, since it is larger than the sum of its proper divisors (11130134).

22206442 is a wasteful number, since it uses less digits than its factorization.

22206442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8972.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 22206442 is about 4712.3711653477. The cubic root of 22206442 is about 281.0776582345.

Adding to 22206442 its reverse (24460222), we get a palindrome (46666664).

The spelling of 22206442 in words is "twenty-two million, two hundred six thousand, four hundred forty-two".