20328107 has 4 divisors (see below), whose sum is σ = 21523896. Its totient is φ = 19132320.

The previous prime is 20328089. The next prime is 20328137. The reversal of 20328107 is 70182302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20328107 - 2¹⁴ = 20311723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20328137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 597869 + ... + 597902.

It is an arithmetic number, because the mean of its divisors is an integer number (5380974).

Almost surely, 2^20328107 is an apocalyptic number.

20328107 is a deficient number, since it is larger than the sum of its proper divisors (1195789).

20328107 is a wasteful number, since it uses less digits than its factorization.

20328107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1195788.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 20328107 is about 4508.6702030643. The cubic root of 20328107 is about 272.9180833626.

The spelling of 20328107 in words is "twenty million, three hundred twenty-eight thousand, one hundred seven".