20116860 has 24 divisors (see below), whose sum is σ = 56327376. Its totient is φ = 5364480.

The previous prime is 20116853. The next prime is 20116871. The reversal of 20116860 is 6861102.

It is a self number, because there is not a number n which added to its sum of digits gives 20116860.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167581 + ... + 167700.

It is an arithmetic number, because the mean of its divisors is an integer number (2346974).

Almost surely, 2^20116860 is an apocalyptic number.

20116860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20116860 is an abundant number, since it is smaller than the sum of its proper divisors (36210516).

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

20116860 is a wasteful number, since it uses less digits than its factorization.

20116860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335293 (or 335291 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 20116860 is about 4485.1822705438. The cubic root of 20116860 is about 271.9694133715.

Adding to 20116860 its reverse (6861102), we get a palindrome (26977962).

The spelling of 20116860 in words is "twenty million, one hundred sixteen thousand, eight hundred sixty".