20026887 has 12 divisors (see below), whose sum is σ = 26977080. Its totient is φ = 13215280.

The previous prime is 20026883. The next prime is 20026889. The reversal of 20026887 is 78862002.

It is not a de Polignac number, because 20026887 - 2² = 20026883 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20026883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51289 + ... + 51677.

It is an arithmetic number, because the mean of its divisors is an integer number (2248090).

Almost surely, 2^20026887 is an apocalyptic number.

20026887 is a deficient number, since it is larger than the sum of its proper divisors (6950193).

20026887 is an equidigital number, since it uses as much as digits as its factorization.

20026887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654 (or 523 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 20026887 is about 4475.1410033651. The cubic root of 20026887 is about 271.5633447698.

Adding to 20026887 its reverse (78862002), we get a palindrome (98888889).

The spelling of 20026887 in words is "twenty million, twenty-six thousand, eight hundred eighty-seven".