22008429 has 20 divisors (see below), whose sum is σ = 33093984. Its totient is φ = 14575464.

The previous prime is 22008407. The next prime is 22008443. The reversal of 22008429 is 92480022.

It is not a de Polignac number, because 22008429 - 2⁵ = 22008397 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22008929) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12714 + ... + 14340.

Almost surely, 2^22008429 is an apocalyptic number.

It is an amenable number.

22008429 is a deficient number, since it is larger than the sum of its proper divisors (11085555).

22008429 is a wasteful number, since it uses less digits than its factorization.

22008429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1806 (or 1797 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 22008429 is about 4691.3142081937. The cubic root of 22008429 is about 280.2397139349.

The spelling of 22008429 in words is "twenty-two million, eight thousand, four hundred twenty-nine".