4061840 has 20 divisors (see below), whose sum is σ = 9443964. Its totient is φ = 1624704.

The previous prime is 4061833. The next prime is 4061843. The reversal of 4061840 is 481604.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2298256 + 1763584 = 1516^2 + 1328^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (4061843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25307 + ... + 25466.

Almost surely, 2^4061840 is an apocalyptic number.

4061840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4061840 is an abundant number, since it is smaller than the sum of its proper divisors (5382124).

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

4061840 is a wasteful number, since it uses less digits than its factorization.

4061840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50786 (or 50780 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 4061840 is about 2015.4007045747. The cubic root of 4061840 is about 159.5539660746.

The spelling of 4061840 in words is "four million, sixty-one thousand, eight hundred forty".