3781140 has 96 divisors (see below), whose sum is σ = 12265344. Its totient is φ = 860160.

The previous prime is 3781121. The next prime is 3781147. The reversal of 3781140 is 411873.

It is a self number, because there is not a number n which added to its sum of digits gives 3781140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3781147) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11052 + ... + 11388.

It is an arithmetic number, because the mean of its divisors is an integer number (127764).

Almost surely, 2^3781140 is an apocalyptic number.

3781140 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 3781140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6132672).

3781140 is an abundant number, since it is smaller than the sum of its proper divisors (8484204).

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

3781140 is a wasteful number, since it uses less digits than its factorization.

3781140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377 (or 375 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 3781140 is about 1944.5153637861. The cubic root of 3781140 is about 155.7904813844.

The spelling of 3781140 in words is "three million, seven hundred eighty-one thousand, one hundred forty".