3811380 has 48 divisors (see below), whose sum is σ = 10772160. Its totient is φ = 1006848.

The previous prime is 3811373. The next prime is 3811387. The reversal of 3811380 is 831183.

It is an interprime number because it is at equal distance from previous prime (3811373) and next prime (3811387).

It is a self number, because there is not a number n which added to its sum of digits gives 3811380.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3811387) 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, 8112 + ... + 8568.

It is an arithmetic number, because the mean of its divisors is an integer number (224420).

Almost surely, 2^3811380 is an apocalyptic number.

3811380 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 3811380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5386080).

3811380 is an abundant number, since it is smaller than the sum of its proper divisors (6960780).

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

3811380 is a wasteful number, since it uses less digits than its factorization.

3811380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608 (or 606 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 3811380 is about 1952.2755952990. The cubic root of 3811380 is about 156.2046951317.

The spelling of 3811380 in words is "three million, eight hundred eleven thousand, three hundred eighty".