3831540 has 48 divisors (see below), whose sum is σ = 11296320. Its totient is φ = 967680.

The previous prime is 3831523. The next prime is 3831557. The reversal of 3831540 is 451383.

It is an interprime number because it is at equal distance from previous prime (3831523) and next prime (3831557).

It is a self number, because there is not a number n which added to its sum of digits gives 3831540.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 541 + ... + 2820.

It is an arithmetic number, because the mean of its divisors is an integer number (235340).

Almost surely, 2^3831540 is an apocalyptic number.

3831540 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 3831540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5648160).

3831540 is an abundant number, since it is smaller than the sum of its proper divisors (7464780).

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

3831540 is a wasteful number, since it uses less digits than its factorization.

3831540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3392 (or 3390 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 3831540 is about 1957.4319911558. The cubic root of 3831540 is about 156.4796218537.

It can be divided in two parts, 3831 and 540, that added together give a triangular number (4371 = T₉₃).

The spelling of 3831540 in words is "three million, eight hundred thirty-one thousand, five hundred forty".