20880097 has 8 divisors (see below), whose sum is σ = 25266816. Its totient is φ = 16844352.

The previous prime is 20880077. The next prime is 20880103. The reversal of 20880097 is 79008802.

It is a happy number.

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

It is not a de Polignac number, because 20880097 - 2¹¹ = 20878049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20880007) 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, 87613 + ... + 87850.

It is an arithmetic number, because the mean of its divisors is an integer number (3158352).

Almost surely, 2^20880097 is an apocalyptic number.

It is an amenable number.

20880097 is a deficient number, since it is larger than the sum of its proper divisors (4386719).

20880097 is a wasteful number, since it uses less digits than its factorization.

20880097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175487.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 20880097 is about 4569.4744774427. The cubic root of 20880097 is about 275.3663305232.

Adding to 20880097 its reverse (79008802), we get a palindrome (99888899).

The spelling of 20880097 in words is "twenty million, eight hundred eighty thousand, ninety-seven".