20026387 has 2 divisors, whose sum is σ = 20026388. Its totient is φ = 20026386.

The previous prime is 20026379. The next prime is 20026397. The reversal of 20026387 is 78362002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20026387 - 2³ = 20026379 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20026397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10013193 + 10013194.

It is an arithmetic number, because the mean of its divisors is an integer number (10013194).

Almost surely, 2^20026387 is an apocalyptic number.

20026387 is a deficient number, since it is larger than the sum of its proper divisors (1).

20026387 is an equidigital number, since it uses as much as digits as its factorization.

20026387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 20026387 is about 4475.0851388549. The cubic root of 20026387 is about 271.5610847613.

Adding to 20026387 its reverse (78362002), we get a palindrome (98388389).

The spelling of 20026387 in words is "twenty million, twenty-six thousand, three hundred eighty-seven".