20186712 has 192 divisors, whose sum is σ = 70272000. Its totient is φ = 5256576.

The previous prime is 20186711. The next prime is 20186717. The reversal of 20186712 is 21768102.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20186711) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 255489 + ... + 255567.

It is an arithmetic number, because the mean of its divisors is an integer number (366000).

Almost surely, 2^20186712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20186712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35136000).

20186712 is an abundant number, since it is smaller than the sum of its proper divisors (50085288).

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

20186712 is a wasteful number, since it uses less digits than its factorization.

20186712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127 (or 104 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 20186712 is about 4492.9624970614. The cubic root of 20186712 is about 272.2838372137.

The spelling of 20186712 in words is "twenty million, one hundred eighty-six thousand, seven hundred twelve".