22424921 has 8 divisors (see below), whose sum is σ = 24994080. Its totient is φ = 19994688.

The previous prime is 22424911. The next prime is 22424957. The reversal of 22424921 is 12942422.

It is a happy number.

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

It is not a de Polignac number, because 22424921 - 2¹⁴ = 22408537 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22424911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34391 + ... + 35036.

It is an arithmetic number, because the mean of its divisors is an integer number (3124260).

Almost surely, 2^22424921 is an apocalyptic number.

It is an amenable number.

22424921 is a deficient number, since it is larger than the sum of its proper divisors (2569159).

22424921 is a wasteful number, since it uses less digits than its factorization.

22424921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69463.

The product of its digits is 2304, while the sum is 26.

The square root of 22424921 is about 4735.4958557684. The cubic root of 22424921 is about 281.9964496644.

The spelling of 22424921 in words is "twenty-two million, four hundred twenty-four thousand, nine hundred twenty-one".