22808143 has 2 divisors, whose sum is σ = 22808144. Its totient is φ = 22808142.

The previous prime is 22808131. The next prime is 22808153. The reversal of 22808143 is 34180822.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22808143 - 2¹⁷ = 22677071 is a prime.

It is a super-2 number, since 2×22808143² = 1040422774216898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22808153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11404071 + 11404072.

It is an arithmetic number, because the mean of its divisors is an integer number (11404072).

Almost surely, 2^22808143 is an apocalyptic number.

22808143 is a deficient number, since it is larger than the sum of its proper divisors (1).

22808143 is an equidigital number, since it uses as much as digits as its factorization.

22808143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 22808143 is about 4775.7871602491. The cubic root of 22808143 is about 283.5937415191.

Adding to 22808143 its reverse (34180822), we get a palindrome (56988965).

The spelling of 22808143 in words is "twenty-two million, eight hundred eight thousand, one hundred forty-three".