20113966 has 8 divisors (see below), whose sum is σ = 30199464. Its totient is φ = 10047480.

The previous prime is 20113963. The next prime is 20113993. The reversal of 20113966 is 66931102.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20113963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1720 + ... + 6571.

It is an arithmetic number, because the mean of its divisors is an integer number (3774933).

Almost surely, 2^20113966 is an apocalyptic number.

20113966 is a deficient number, since it is larger than the sum of its proper divisors (10085498).

20113966 is a wasteful number, since it uses less digits than its factorization.

20113966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9506.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 20113966 is about 4484.8596410590. The cubic root of 20113966 is about 271.9563709578.

The spelling of 20113966 in words is "twenty million, one hundred thirteen thousand, nine hundred sixty-six".