4086240 has 48 divisors (see below), whose sum is σ = 12873168. Its totient is φ = 1089536.

The previous prime is 4086217. The next prime is 4086241. The reversal of 4086240 is 426804.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 4086240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4086241) 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, 3777 + ... + 4736.

It is an arithmetic number, because the mean of its divisors is an integer number (268191).

Almost surely, 2^4086240 is an apocalyptic number.

4086240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4086240 is an abundant number, since it is smaller than the sum of its proper divisors (8786928).

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

4086240 is a wasteful number, since it uses less digits than its factorization.

4086240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8531 (or 8523 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 4086240 is about 2021.4450276968. The cubic root of 4086240 is about 159.8728155942.

The spelling of 4086240 in words is "four million, eighty-six thousand, two hundred forty".