20113160 has 16 divisors (see below), whose sum is σ = 45254700. Its totient is φ = 8045248.

The previous prime is 20113139. The next prime is 20113169. The reversal of 20113160 is 6131102.

It can be written as a sum of positive squares in 2 ways, for example, as 19695844 + 417316 = 4438^2 + 646^2 .

It is not an unprimeable number, because it can be changed into a prime (20113169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251375 + ... + 251454.

Almost surely, 2^20113160 is an apocalyptic number.

20113160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20113160 is an abundant number, since it is smaller than the sum of its proper divisors (25141540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20113160 is a wasteful number, since it uses less digits than its factorization.

20113160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502840 (or 502836 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 20113160 is about 4484.7697822742. The cubic root of 20113160 is about 271.9527383283.

Adding to 20113160 its reverse (6131102), we get a palindrome (26244262).

The spelling of 20113160 in words is "twenty million, one hundred thirteen thousand, one hundred sixty".