22000387 has 2 divisors, whose sum is σ = 22000388. Its totient is φ = 22000386.

The previous prime is 22000379. The next prime is 22000399. The reversal of 22000387 is 78300022.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22000387 - 2³ = 22000379 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22000327) 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, 11000193 + 11000194.

It is an arithmetic number, because the mean of its divisors is an integer number (11000194).

Almost surely, 2^22000387 is an apocalyptic number.

22000387 is a deficient number, since it is larger than the sum of its proper divisors (1).

22000387 is an equidigital number, since it uses as much as digits as its factorization.

22000387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 22000387 is about 4690.4570139806. The cubic root of 22000387 is about 280.2055760699.

The spelling of 22000387 in words is "twenty-two million, three hundred eighty-seven", and thus it is an aban number.