22038421 has 8 divisors (see below), whose sum is σ = 22744064. Its totient is φ = 21338640.

The previous prime is 22038413. The next prime is 22038433. The reversal of 22038421 is 12483022.

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

It is not a de Polignac number, because 22038421 - 2³ = 22038413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22038392 and 22038401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22038451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6916 + ... + 9586.

It is an arithmetic number, because the mean of its divisors is an integer number (2843008).

Almost surely, 2^22038421 is an apocalyptic number.

It is an amenable number.

22038421 is a deficient number, since it is larger than the sum of its proper divisors (705643).

22038421 is a wasteful number, since it uses less digits than its factorization.

22038421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2931.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 22038421 is about 4694.5096655561. The cubic root of 22038421 is about 280.3669551000.

The spelling of 22038421 in words is "twenty-two million, thirty-eight thousand, four hundred twenty-one".