4011540 has 96 divisors (see below), whose sum is σ = 12512640. Its totient is φ = 953856.

The previous prime is 4011533. The next prime is 4011551. The reversal of 4011540 is 451104.

4011540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28791 + ... + 28929.

It is an arithmetic number, because the mean of its divisors is an integer number (130340).

Almost surely, 2^4011540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4011540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6256320).

4011540 is an abundant number, since it is smaller than the sum of its proper divisors (8501100).

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

4011540 is a wasteful number, since it uses less digits than its factorization.

4011540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201 (or 199 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 4011540 is about 2002.8829221899. The cubic root of 4011540 is about 158.8926136962.

Adding to 4011540 its reverse (451104), we get a palindrome (4462644).

The spelling of 4011540 in words is "four million, eleven thousand, five hundred forty".