20880522 has 96 divisors (see below), whose sum is σ = 53660880. Its totient is φ = 5806080.

The previous prime is 20880491. The next prime is 20880523. The reversal of 20880522 is 22508802.

It can be written as a sum of positive squares in 8 ways, for example, as 3316041 + 17564481 = 1821^2 + 4191^2 .

It is not an unprimeable number, because it can be changed into a prime (20880523) by changing a digit.

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 in 47 ways as a sum of consecutive naturals, for example, 115272 + ... + 115452.

Almost surely, 2^20880522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20880522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26830440).

20880522 is an abundant number, since it is smaller than the sum of its proper divisors (32780358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20880522 is a wasteful number, since it uses less digits than its factorization.

20880522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248 (or 245 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 20880522 is about 4569.5209814597. The cubic root of 20880522 is about 275.3681988079.

The spelling of 20880522 in words is "twenty million, eight hundred eighty thousand, five hundred twenty-two".