22012906 has 8 divisors (see below), whose sum is σ = 34757280. Its totient is φ = 10427148.

The previous prime is 22012901. The next prime is 22012927. The reversal of 22012906 is 60921022.

It is a happy number.

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 (22012901) 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, 289606 + ... + 289681.

It is an arithmetic number, because the mean of its divisors is an integer number (4344660).

Almost surely, 2^22012906 is an apocalyptic number.

22012906 is a deficient number, since it is larger than the sum of its proper divisors (12744374).

22012906 is a wasteful number, since it uses less digits than its factorization.

22012906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579308.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 22012906 is about 4691.7913423340. The cubic root of 22012906 is about 280.2587149600.

Adding to 22012906 its reverse (60921022), we get a palindrome (82933928).

The spelling of 22012906 in words is "twenty-two million, twelve thousand, nine hundred six".