20880329 has 8 divisors (see below), whose sum is σ = 21607680. Its totient is φ = 20156400.

The previous prime is 20880323. The next prime is 20880347. The reversal of 20880329 is 92308802.

It is a happy number.

20880329 is nontrivially palindromic in base 8.

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 20880329 - 2⁴ = 20880313 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20880295 and 20880304.

It is not an unprimeable number, because it can be changed into a prime (20880323) 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, 19982 + ... + 21000.

It is an arithmetic number, because the mean of its divisors is an integer number (2700960).

Almost surely, 2^20880329 is an apocalyptic number.

It is an amenable number.

20880329 is a deficient number, since it is larger than the sum of its proper divisors (727351).

20880329 is a wasteful number, since it uses less digits than its factorization.

20880329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1711.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 20880329 is about 4569.4998632235. The cubic root of 20880329 is about 275.3673503900.

The spelling of 20880329 in words is "twenty million, eight hundred eighty thousand, three hundred twenty-nine".