22623321 has 8 divisors (see below), whose sum is σ = 34473664. Its totient is φ = 12927600.

The previous prime is 22623313. The next prime is 22623353. The reversal of 22623321 is 12332622.

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

It is not a de Polignac number, because 22623321 - 2³ = 22623313 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 1077301 = 22623321 / (2 + 2 + 6 + 2 + 3 + 3 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22623361) 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, 538630 + ... + 538671.

It is an arithmetic number, because the mean of its divisors is an integer number (4309208).

Almost surely, 2^22623321 is an apocalyptic number.

22623321 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22623321 is a deficient number, since it is larger than the sum of its proper divisors (11850343).

22623321 is a wasteful number, since it uses less digits than its factorization.

22623321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077311.

The product of its digits is 864, while the sum is 21.

The square root of 22623321 is about 4756.3979017740. The cubic root of 22623321 is about 282.8256447865.

Adding to 22623321 its reverse (12332622), we get a palindrome (34955943).

The spelling of 22623321 in words is "twenty-two million, six hundred twenty-three thousand, three hundred twenty-one".