4041540 has 36 divisors (see below), whose sum is σ = 12259884. Its totient is φ = 1077696.

The previous prime is 4041539. The next prime is 4041553. The reversal of 4041540 is 451404.

It can be written as a sum of positive squares in 2 ways, for example, as 887364 + 3154176 = 942^2 + 1776^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11047 + ... + 11406.

Almost surely, 2^4041540 is an apocalyptic number.

It is an amenable number.

4041540 is an abundant number, since it is smaller than the sum of its proper divisors (8218344).

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

4041540 is a wasteful number, since it uses less digits than its factorization.

4041540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22468 (or 22463 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 4041540 is about 2010.3581770421. The cubic root of 4041540 is about 159.2877192226.

Adding to 4041540 its reverse (451404), we get a palindrome (4492944).

The spelling of 4041540 in words is "four million, forty-one thousand, five hundred forty".