20880291 has 8 divisors (see below), whose sum is σ = 27869184. Its totient is φ = 13905800.

The previous prime is 20880289. The next prime is 20880313. The reversal of 20880291 is 19208802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20880291 - 2¹ = 20880289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20880271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 430 + ... + 6476.

It is an arithmetic number, because the mean of its divisors is an integer number (3483648).

Almost surely, 2^20880291 is an apocalyptic number.

20880291 is a deficient number, since it is larger than the sum of its proper divisors (6988893).

20880291 is a wasteful number, since it uses less digits than its factorization.

20880291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7201.

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 20880291 is about 4569.4957052174. The cubic root of 20880291 is about 275.3671833433.

The spelling of 20880291 in words is "twenty million, eight hundred eighty thousand, two hundred ninety-one".