22038821 has 8 divisors (see below), whose sum is σ = 25239744. Its totient is φ = 18851040.

The previous prime is 22038781. The next prime is 22038829. The reversal of 22038821 is 12883022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22038821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22038829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 626 + ... + 6668.

It is an arithmetic number, because the mean of its divisors is an integer number (3154968).

Almost surely, 2^22038821 is an apocalyptic number.

It is an amenable number.

22038821 is a deficient number, since it is larger than the sum of its proper divisors (3200923).

22038821 is an equidigital number, since it uses as much as digits as its factorization.

22038821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6571.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 22038821 is about 4694.5522683212. The cubic root of 22038821 is about 280.3686513210.

The spelling of 22038821 in words is "twenty-two million, thirty-eight thousand, eight hundred twenty-one".