22400023 has 2 divisors, whose sum is σ = 22400024. Its totient is φ = 22400022.

The previous prime is 22400009. The next prime is 22400029. The reversal of 22400023 is 32000422.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22400023 - 2⁵ = 22399991 is a prime.

It is a super-2 number, since 2×22400023² = 1003522060801058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22399976 and 22400012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22400029) 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 as a sum of consecutive naturals, namely, 11200011 + 11200012.

It is an arithmetic number, because the mean of its divisors is an integer number (11200012).

Almost surely, 2^22400023 is an apocalyptic number.

22400023 is a deficient number, since it is larger than the sum of its proper divisors (1).

22400023 is an equidigital number, since it uses as much as digits as its factorization.

22400023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 22400023 is about 4732.8662562976. The cubic root of 22400023 is about 281.8920457634.

Adding to 22400023 its reverse (32000422), we get a palindrome (54400445).

The spelling of 22400023 in words is "twenty-two million, four hundred thousand, twenty-three".