4186540 has 12 divisors (see below), whose sum is σ = 8791776. Its totient is φ = 1674608.

The previous prime is 4186531. The next prime is 4186547. The reversal of 4186540 is 456814.

It is a junction number, because it is equal to n+sod(n) for n = 4186499 and 4186508.

It is not an unprimeable number, because it can be changed into a prime (4186547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104644 + ... + 104683.

It is an arithmetic number, because the mean of its divisors is an integer number (732648).

Almost surely, 2^4186540 is an apocalyptic number.

It is an amenable number.

4186540 is an abundant number, since it is smaller than the sum of its proper divisors (4605236).

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

4186540 is a wasteful number, since it uses less digits than its factorization.

4186540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209336 (or 209334 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 4186540 is about 2046.1036141897. The cubic root of 4186540 is about 161.1703249995.

It can be divided in two parts, 41865 and 40, that added together give a triangular number (41905 = T₂₈₉).

The spelling of 4186540 in words is "four million, one hundred eighty-six thousand, five hundred forty".