22320993 has 8 divisors (see below), whose sum is σ = 29848000. Its totient is φ = 14837328.

The previous prime is 22320967. The next prime is 22321007. The reversal of 22320993 is 39902322.

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 22320993 - 2⁶ = 22320929 is a prime.

It is a super-3 number, since 3×22320993³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22320993.

It is not an unprimeable number, because it can be changed into a prime (22320943) 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, 9613 + ... + 11706.

It is an arithmetic number, because the mean of its divisors is an integer number (3731000).

Almost surely, 2^22320993 is an apocalyptic number.

It is an amenable number.

22320993 is a deficient number, since it is larger than the sum of its proper divisors (7527007).

22320993 is a wasteful number, since it uses less digits than its factorization.

22320993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21671.

The product of its (nonzero) digits is 5832, while the sum is 30.

The square root of 22320993 is about 4724.5098158433. The cubic root of 22320993 is about 281.5601386698.

The spelling of 22320993 in words is "twenty-two million, three hundred twenty thousand, nine hundred ninety-three".