3810840 has 64 divisors (see below), whose sum is σ = 12476160. Its totient is φ = 923520.

The previous prime is 3810823. The next prime is 3810841. The reversal of 3810840 is 480183.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 3810840.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3810841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124 + ... + 2763.

It is an arithmetic number, because the mean of its divisors is an integer number (194940).

Almost surely, 2^3810840 is an apocalyptic number.

3810840 is a gapful number since it is divisible by the number (30) 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 3810840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6238080).

3810840 is an abundant number, since it is smaller than the sum of its proper divisors (8665320).

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

3810840 is a wasteful number, since it uses less digits than its factorization.

3810840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2912 (or 2908 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 3810840 is about 1952.1372902539. The cubic root of 3810840 is about 156.1973177059.

It can be divided in two parts, 38 and 10840, that added together give a triangular number (10878 = T₁₄₇).

The spelling of 3810840 in words is "three million, eight hundred ten thousand, eight hundred forty".