20875329 has 12 divisors (see below), whose sum is σ = 31464576. Its totient is φ = 13311672.

The previous prime is 20875313. The next prime is 20875333. The reversal of 20875329 is 92357802.

It is a happy number.

It is not a de Polignac number, because 20875329 - 2⁴ = 20875313 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20875293 and 20875302.

It is not an unprimeable number, because it can be changed into a prime (20875399) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50217 + ... + 50630.

It is an arithmetic number, because the mean of its divisors is an integer number (2622048).

Almost surely, 2^20875329 is an apocalyptic number.

It is an amenable number.

20875329 is a deficient number, since it is larger than the sum of its proper divisors (10589247).

20875329 is a wasteful number, since it uses less digits than its factorization.

20875329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100876 (or 100873 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 20875329 is about 4568.9527246405. The cubic root of 20875329 is about 275.3453688291.

The spelling of 20875329 in words is "twenty million, eight hundred seventy-five thousand, three hundred twenty-nine".