20880208 has 10 divisors (see below), whose sum is σ = 40455434. Its totient is φ = 10440096.

The previous prime is 20880191. The next prime is 20880257. The reversal of 20880208 is 80208802.

It can be written as a sum of positive squares in only one way, i.e., 15460624 + 5419584 = 3932^2 + 2328^2 .

It is a super-2 number, since 2×20880208² = 871966172246528, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 652491 + ... + 652522.

Almost surely, 2^20880208 is an apocalyptic number.

It is an amenable number.

20880208 is a deficient number, since it is larger than the sum of its proper divisors (19575226).

20880208 is a wasteful number, since it uses less digits than its factorization.

20880208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1305021 (or 1305015 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 28.

The square root of 20880208 is about 4569.4866232434. The cubic root of 20880208 is about 275.3668184776.

The spelling of 20880208 in words is "twenty million, eight hundred eighty thousand, two hundred eight".