20898027 has 8 divisors (see below), whose sum is σ = 30960080. Its totient is φ = 13932000.

The previous prime is 20897993. The next prime is 20898041. The reversal of 20898027 is 72089802.

It is not a de Polignac number, because 20898027 - 2¹² = 20893931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20897982 and 20898000.

It is not an unprimeable number, because it can be changed into a prime (20898047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 386974 + ... + 387027.

It is an arithmetic number, because the mean of its divisors is an integer number (3870010).

Almost surely, 2^20898027 is an apocalyptic number.

20898027 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

20898027 is a deficient number, since it is larger than the sum of its proper divisors (10062053).

20898027 is an equidigital number, since it uses as much as digits as its factorization.

20898027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774010 (or 774004 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 20898027 is about 4571.4359888333. The cubic root of 20898027 is about 275.4451281414.

The spelling of 20898027 in words is "twenty million, eight hundred ninety-eight thousand, twenty-seven".