20880052 has 6 divisors (see below), whose sum is σ = 36540098. Its totient is φ = 10440024.

The previous prime is 20880043. The next prime is 20880071. The reversal of 20880052 is 25008802.

It can be written as a sum of positive squares in only one way, i.e., 14945956 + 5934096 = 3866^2 + 2436^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20879999 and 20880026.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2610003 + ... + 2610010.

Almost surely, 2^20880052 is an apocalyptic number.

It is an amenable number.

20880052 is a deficient number, since it is larger than the sum of its proper divisors (15660046).

20880052 is a wasteful number, since it uses less digits than its factorization.

20880052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5220017 (or 5220015 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 20880052 is about 4569.4695534602. The cubic root of 20880052 is about 275.3661327033.

Adding to 20880052 its reverse (25008802), we get a palindrome (45888854).

The spelling of 20880052 in words is "twenty million, eight hundred eighty thousand, fifty-two".