186042840 has 64 divisors (see below), whose sum is σ = 564883200. Its totient is φ = 49011072.

The previous prime is 186042827. The next prime is 186042869. The reversal of 186042840 is 48240681.

186042840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×186042840² = 69223876630531200, which contains 22 as substring.

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, 621 + ... + 19299.

It is an arithmetic number, because the mean of its divisors is an integer number (8826300).

Almost surely, 2^186042840 is an apocalyptic number.

186042840 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 186042840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (282441600).

186042840 is an abundant number, since it is smaller than the sum of its proper divisors (378840360).

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

186042840 is a wasteful number, since it uses less digits than its factorization.

186042840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18776 (or 18772 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 186042840 is about 13639.7521971625. The cubic root of 186042840 is about 570.8705687375.

The spelling of 186042840 in words is "one hundred eighty-six million, forty-two thousand, eight hundred forty".