20272109 has 32 divisors (see below), whose sum is σ = 26127360. Its totient is φ = 15436800.

The previous prime is 20272099. The next prime is 20272117. The reversal of 20272109 is 90127202.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20272109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20272159) 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, 75227 + ... + 75495.

It is an arithmetic number, because the mean of its divisors is an integer number (816480).

Almost surely, 2^20272109 is an apocalyptic number.

It is an amenable number.

20272109 is a deficient number, since it is larger than the sum of its proper divisors (5855251).

20272109 is a wasteful number, since it uses less digits than its factorization.

20272109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 20272109 is about 4502.4558854030. The cubic root of 20272109 is about 272.6672496831.

The spelling of 20272109 in words is "twenty million, two hundred seventy-two thousand, one hundred nine".