4011840 has 168 divisors, whose sum is σ = 15849600. Its totient is φ = 912384.

The previous prime is 4011827. The next prime is 4011859. The reversal of 4011840 is 481104.

4011840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (168).

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

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 23 ways as a sum of consecutive naturals, for example, 20061 + ... + 20259.

Almost surely, 2^4011840 is an apocalyptic number.

4011840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4011840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7924800).

4011840 is an abundant number, since it is smaller than the sum of its proper divisors (11837760).

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

4011840 is a wasteful number, since it uses less digits than its factorization.

4011840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229 (or 216 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 4011840 is about 2002.9578128358. The cubic root of 4011840 is about 158.8965744856.

Adding to 4011840 its reverse (481104), we get a palindrome (4492944).

It can be divided in two parts, 4011 and 840, that added together give a triangular number (4851 = T₉₈).

The spelling of 4011840 in words is "four million, eleven thousand, eight hundred forty".