20445926 has 8 divisors (see below), whose sum is σ = 31658304. Its totient is φ = 9893160.

The previous prime is 20445923. The next prime is 20445947. The reversal of 20445926 is 62954402.

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

It is a junction number, because it is equal to n+sod(n) for n = 20445892 and 20445901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20445923) 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, 164825 + ... + 164948.

It is an arithmetic number, because the mean of its divisors is an integer number (3957288).

Almost surely, 2^20445926 is an apocalyptic number.

20445926 is a deficient number, since it is larger than the sum of its proper divisors (11212378).

20445926 is a wasteful number, since it uses less digits than its factorization.

20445926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329806.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 20445926 is about 4521.7171517024. The cubic root of 20445926 is about 273.4443335936. Note that the first 3 decimals are identical.

The spelling of 20445926 in words is "twenty million, four hundred forty-five thousand, nine hundred twenty-six".