20898208 has 24 divisors (see below), whose sum is σ = 41247360. Its totient is φ = 10422720.

The previous prime is 20898203. The next prime is 20898209. The reversal of 20898208 is 80289802.

It is a super-2 number, since 2×20898208² = 873470195222528, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20898203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20593 + ... + 21583.

It is an arithmetic number, because the mean of its divisors is an integer number (1718640).

Almost surely, 2^20898208 is an apocalyptic number.

It is an amenable number.

20898208 is a deficient number, since it is larger than the sum of its proper divisors (20349152).

20898208 is an equidigital number, since it uses as much as digits as its factorization.

20898208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1660 (or 1652 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 37.

The square root of 20898208 is about 4571.4557856333. The cubic root of 20898208 is about 275.4459233588.

The spelling of 20898208 in words is "twenty million, eight hundred ninety-eight thousand, two hundred eight".