20115160 has 64 divisors (see below), whose sum is σ = 49351680. Its totient is φ = 7334400.

The previous prime is 20115127. The next prime is 20115191. The reversal of 20115160 is 6151102.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52329 + ... + 52711.

It is an arithmetic number, because the mean of its divisors is an integer number (771120).

Almost surely, 2^20115160 is an apocalyptic number.

20115160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20115160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24675840).

20115160 is an abundant number, since it is smaller than the sum of its proper divisors (29236520).

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

20115160 is a wasteful number, since it uses less digits than its factorization.

20115160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508 (or 504 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 20115160 is about 4484.9927536173. The cubic root of 20115160 is about 271.9617521191.

Adding to 20115160 its reverse (6151102), we get a palindrome (26266262).

The spelling of 20115160 in words is "twenty million, one hundred fifteen thousand, one hundred sixty".