22567421 has 8 divisors (see below), whose sum is σ = 24091200. Its totient is φ = 21077280.

The previous prime is 22567417. The next prime is 22567429. The reversal of 22567421 is 12476522.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 22567421 - 2² = 22567417 is a prime.

It is a super-3 number, since 3×22567421³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22567429) 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, 7016 + ... + 9713.

It is an arithmetic number, because the mean of its divisors is an integer number (3011400).

Almost surely, 2^22567421 is an apocalyptic number.

It is an amenable number.

22567421 is a deficient number, since it is larger than the sum of its proper divisors (1523779).

22567421 is a wasteful number, since it uses less digits than its factorization.

22567421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16819.

The product of its digits is 6720, while the sum is 29.

The square root of 22567421 is about 4750.5179717584. The cubic root of 22567421 is about 282.5925078823.

The spelling of 22567421 in words is "twenty-two million, five hundred sixty-seven thousand, four hundred twenty-one".