20110845 has 8 divisors (see below), whose sum is σ = 32177376. Its totient is φ = 10725776.

The previous prime is 20110841. The next prime is 20110859. The reversal of 20110845 is 54801102.

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

It is a cyclic number.

It is not a de Polignac number, because 20110845 - 2² = 20110841 is a prime.

It is a super-2 number, since 2×20110845² = 808892173228050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110841) 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 7 ways as a sum of consecutive naturals, for example, 670347 + ... + 670376.

It is an arithmetic number, because the mean of its divisors is an integer number (4022172).

Almost surely, 2^20110845 is an apocalyptic number.

It is an amenable number.

20110845 is a deficient number, since it is larger than the sum of its proper divisors (12066531).

20110845 is a wasteful number, since it uses less digits than its factorization.

20110845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340731.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 20110845 is about 4484.5116791018. The cubic root of 20110845 is about 271.9423041193.

Adding to 20110845 its reverse (54801102), we get a palindrome (74911947).

The spelling of 20110845 in words is "twenty million, one hundred ten thousand, eight hundred forty-five".