22906229 has 24 divisors (see below), whose sum is σ = 26278560. Its totient is φ = 19891872.

The previous prime is 22906207. The next prime is 22906237. The reversal of 22906229 is 92260922.

It is not a de Polignac number, because 22906229 - 2⁸ = 22905973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22906195 and 22906204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22905229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 432167 + ... + 432219.

It is an arithmetic number, because the mean of its divisors is an integer number (1094940).

Almost surely, 2^22906229 is an apocalyptic number.

It is an amenable number.

22906229 is a deficient number, since it is larger than the sum of its proper divisors (3372331).

22906229 is a wasteful number, since it uses less digits than its factorization.

22906229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 22906229 is about 4786.0452358915. The cubic root of 22906229 is about 283.9996900413. Note that the first 3 decimals are identical.

The spelling of 22906229 in words is "twenty-two million, nine hundred six thousand, two hundred twenty-nine".