20880267 has 32 divisors (see below), whose sum is σ = 31186944. Its totient is φ = 12364800.

The previous prime is 20880257. The next prime is 20880269. The reversal of 20880267 is 76208802.

It is not a de Polignac number, because 20880267 - 2¹² = 20876171 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20880269) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74167 + ... + 74447.

It is an arithmetic number, because the mean of its divisors is an integer number (974592).

Almost surely, 2^20880267 is an apocalyptic number.

20880267 is a deficient number, since it is larger than the sum of its proper divisors (10306677).

20880267 is a wasteful number, since it uses less digits than its factorization.

20880267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379.

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 20880267 is about 4569.4930791063. The cubic root of 20880267 is about 275.3670778401.

The spelling of 20880267 in words is "twenty million, eight hundred eighty thousand, two hundred sixty-seven".