186140 has 24 divisors (see below), whose sum is σ = 402192. Its totient is φ = 72320.

The previous prime is 186119. The next prime is 186149. The reversal of 186140 is 41681.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (186149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 707 + ... + 933.

It is an arithmetic number, because the mean of its divisors is an integer number (16758).

2¹⁸⁶¹⁴⁰ is an apocalyptic number.

186140 is a gapful number since it is divisible by the number (10) 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 186140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201096).

186140 is an abundant number, since it is smaller than the sum of its proper divisors (216052).

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

186140 is a wasteful number, since it uses less digits than its factorization.

186140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277 (or 275 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 186140 is about 431.4394511400. The cubic root of 186140 is about 57.0969929601.

The spelling of 186140 in words is "one hundred eighty-six thousand, one hundred forty".