22148387 has 2 divisors, whose sum is σ = 22148388. Its totient is φ = 22148386.

The previous prime is 22148359. The next prime is 22148407. The reversal of 22148387 is 78384122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22148387 - 2⁸ = 22148131 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22142387) 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, 11074193 + 11074194.

It is an arithmetic number, because the mean of its divisors is an integer number (11074194).

Almost surely, 2^22148387 is an apocalyptic number.

22148387 is a deficient number, since it is larger than the sum of its proper divisors (1).

22148387 is an equidigital number, since it uses as much as digits as its factorization.

22148387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21504, while the sum is 35.

The square root of 22148387 is about 4706.2072840027. The cubic root of 22148387 is about 280.8325010811.

It can be divided in two parts, 2214 and 8387, that added together give a palindrome (10601).

The spelling of 22148387 in words is "twenty-two million, one hundred forty-eight thousand, three hundred eighty-seven".