20881027 has 2 divisors, whose sum is σ = 20881028. Its totient is φ = 20881026.

The previous prime is 20881001. The next prime is 20881067. The reversal of 20881027 is 72018802.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20881027 - 2¹⁵ = 20848259 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20880986 and 20881004.

It is not a weakly prime, because it can be changed into another prime (20881067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10440513 + 10440514.

It is an arithmetic number, because the mean of its divisors is an integer number (10440514).

Almost surely, 2^20881027 is an apocalyptic number.

20881027 is a deficient number, since it is larger than the sum of its proper divisors (1).

20881027 is an equidigital number, since it uses as much as digits as its factorization.

20881027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1792, while the sum is 28.

The square root of 20881027 is about 4569.5762385587. The cubic root of 20881027 is about 275.3704187367.

Adding to 20881027 its reverse (72018802), we get a palindrome (92899829).

The spelling of 20881027 in words is "twenty million, eight hundred eighty-one thousand, twenty-seven".