20381110 has 16 divisors (see below), whose sum is σ = 38617200. Its totient is φ = 7723296.

The previous prime is 20381107. The next prime is 20381149. The reversal of 20381110 is 1118302.

It is a congruent number.

It is an unprimeable number.

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, 53445 + ... + 53824.

It is an arithmetic number, because the mean of its divisors is an integer number (2413575).

Almost surely, 2^20381110 is an apocalyptic number.

20381110 is a deficient number, since it is larger than the sum of its proper divisors (18236090).

20381110 is a wasteful number, since it uses less digits than its factorization.

20381110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107295.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 20381110 is about 4514.5442737889. The cubic root of 20381110 is about 273.1550774425.

Adding to 20381110 its reverse (1118302), we get a palindrome (21499412).

The spelling of 20381110 in words is "twenty million, three hundred eighty-one thousand, one hundred ten".