3881140 has 12 divisors (see below), whose sum is σ = 8150436. Its totient is φ = 1552448.

The previous prime is 3881131. The next prime is 3881147. The reversal of 3881140 is 411883.

It can be written as a sum of positive squares in 2 ways, for example, as 1971216 + 1909924 = 1404^2 + 1382^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3881147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97009 + ... + 97048.

It is an arithmetic number, because the mean of its divisors is an integer number (679203).

Almost surely, 2^3881140 is an apocalyptic number.

It is an amenable number.

3881140 is an abundant number, since it is smaller than the sum of its proper divisors (4269296).

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

3881140 is a wasteful number, since it uses less digits than its factorization.

3881140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194066 (or 194064 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 3881140 is about 1970.0609127639. The cubic root of 3881140 is about 157.1519483131.

The spelling of 3881140 in words is "three million, eight hundred eighty-one thousand, one hundred forty".