4188040 has 16 divisors (see below), whose sum is σ = 9423180. Its totient is φ = 1675200.

The previous prime is 4188017. The next prime is 4188043. The reversal of 4188040 is 408814.

It can be written as a sum of positive squares in 2 ways, for example, as 4153444 + 34596 = 2038^2 + 186^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4187996 and 4188014.

It is not an unprimeable number, because it can be changed into a prime (4188043) 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, 52311 + ... + 52390.

Almost surely, 2^4188040 is an apocalyptic number.

4188040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4188040 is an abundant number, since it is smaller than the sum of its proper divisors (5235140).

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

4188040 is a wasteful number, since it uses less digits than its factorization.

4188040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104712 (or 104708 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 25.

The square root of 4188040 is about 2046.4701317146. The cubic root of 4188040 is about 161.1895713318.

The spelling of 4188040 in words is "four million, one hundred eighty-eight thousand, forty".