20445106 has 8 divisors (see below), whose sum is σ = 33455664. Its totient is φ = 9293220.

The previous prime is 20445097. The next prime is 20445109. The reversal of 20445106 is 60154402.

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

It is a super-3 number, since 3×20445106³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 929323 = 20445106 / (2 + 0 + 4 + 4 + 5 + 1 + 0 + 6).

It is not an unprimeable number, because it can be changed into a prime (20445109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 464640 + ... + 464683.

It is an arithmetic number, because the mean of its divisors is an integer number (4181958).

Almost surely, 2^20445106 is an apocalyptic number.

20445106 is a deficient number, since it is larger than the sum of its proper divisors (13010558).

20445106 is a wasteful number, since it uses less digits than its factorization.

20445106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929336.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 20445106 is about 4521.6264772756. The cubic root of 20445106 is about 273.4406779778.

Adding to 20445106 its reverse (60154402), we get a palindrome (80599508).

The spelling of 20445106 in words is "twenty million, four hundred forty-five thousand, one hundred six".