22003389 has 12 divisors (see below), whose sum is σ = 33652476. Its totient is φ = 13805952.

The previous prime is 22003363. The next prime is 22003409. The reversal of 22003389 is 98330022.

It can be written as a sum of positive squares in 2 ways, for example, as 16040025 + 5963364 = 4005^2 + 2442^2 .

It is not a de Polignac number, because 22003389 - 2⁵ = 22003357 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22003309) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71754 + ... + 72059.

It is an arithmetic number, because the mean of its divisors is an integer number (2804373).

Almost surely, 2^22003389 is an apocalyptic number.

It is an amenable number.

22003389 is a deficient number, since it is larger than the sum of its proper divisors (11649087).

22003389 is a wasteful number, since it uses less digits than its factorization.

22003389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143836 (or 143833 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 22003389 is about 4690.7770145254. Note that the first 3 decimals coincide. The cubic root of 22003389 is about 280.2183203742.

The spelling of 22003389 in words is "twenty-two million, three thousand, three hundred eighty-nine".