20880002 has 24 divisors (see below), whose sum is σ = 37079868. Its totient is φ = 8759520.

The previous prime is 20880001. The next prime is 20880007. The reversal of 20880002 is 20008802.

It can be written as a sum of positive squares in 2 ways, for example, as 15594601 + 5285401 = 3949^2 + 2299^2 .

It is not an unprimeable number, because it can be changed into a prime (20880001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 173 + ... + 6464.

Almost surely, 2^20880002 is an apocalyptic number.

20880002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20880002 is a deficient number, since it is larger than the sum of its proper divisors (16199866).

20880002 is a wasteful number, since it uses less digits than its factorization.

20880002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6674 (or 6663 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 20880002 is about 4569.4640823624. The cubic root of 20880002 is about 275.3659129031.

Adding to 20880002 its reverse (20008802), we get a palindrome (40888804).

The spelling of 20880002 in words is "twenty million, eight hundred eighty thousand, two".