22400223 has 4 divisors (see below), whose sum is σ = 29866968. Its totient is φ = 14933480.

The previous prime is 22400219. The next prime is 22400243. The reversal of 22400223 is 32200422.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22400223 - 2² = 22400219 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22400243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3733368 + ... + 3733373.

It is an arithmetic number, because the mean of its divisors is an integer number (7466742).

Almost surely, 2^22400223 is an apocalyptic number.

22400223 is a deficient number, since it is larger than the sum of its proper divisors (7466745).

22400223 is an equidigital number, since it uses as much as digits as its factorization.

22400223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7466744.

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 22400223 is about 4732.8873850959. The cubic root of 22400223 is about 281.8928847245.

Adding to 22400223 its reverse (32200422), we get a palindrome (54600645).

The spelling of 22400223 in words is "twenty-two million, four hundred thousand, two hundred twenty-three".