20186080 has 48 divisors (see below), whose sum is σ = 48323520. Its totient is φ = 7967232.

The previous prime is 20186071. The next prime is 20186093. The reversal of 20186080 is 8068102.

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, 11842 + ... + 13438.

It is an arithmetic number, because the mean of its divisors is an integer number (1006740).

Almost surely, 2^20186080 is an apocalyptic number.

20186080 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 20186080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24161760).

20186080 is an abundant number, since it is smaller than the sum of its proper divisors (28137440).

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

20186080 is a wasteful number, since it uses less digits than its factorization.

20186080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1691 (or 1683 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 20186080 is about 4492.8921642968. The cubic root of 20186080 is about 272.2809956550.

The spelling of 20186080 in words is "twenty million, one hundred eighty-six thousand, eighty".