3881756 has 12 divisors (see below), whose sum is σ = 7088592. Its totient is φ = 1856448.

The previous prime is 3881743. The next prime is 3881803. The reversal of 3881756 is 6571883.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21005 + ... + 21188.

It is an arithmetic number, because the mean of its divisors is an integer number (590716).

Almost surely, 2^3881756 is an apocalyptic number.

It is an amenable number.

3881756 is a deficient number, since it is larger than the sum of its proper divisors (3206836).

3881756 is a wasteful number, since it uses less digits than its factorization.

3881756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42220 (or 42218 counting only the distinct ones).

The product of its digits is 40320, while the sum is 38.

The square root of 3881756 is about 1970.2172469045. The cubic root of 3881756 is about 157.1602620627.

The spelling of 3881756 in words is "three million, eight hundred eighty-one thousand, seven hundred fifty-six".