3881236 has 12 divisors (see below), whose sum is σ = 7191828. Its totient is φ = 1826432.

The previous prime is 3881221. The next prime is 3881239. The reversal of 3881236 is 6321883.

3881236 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1976836 + 1904400 = 1406^2 + 1380^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3881198 and 3881207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3881239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28471 + ... + 28606.

It is an arithmetic number, because the mean of its divisors is an integer number (599319).

Almost surely, 2^3881236 is an apocalyptic number.

It is an amenable number.

3881236 is a deficient number, since it is larger than the sum of its proper divisors (3310592).

3881236 is a wasteful number, since it uses less digits than its factorization.

3881236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57098 (or 57096 counting only the distinct ones).

The product of its digits is 6912, while the sum is 31.

The square root of 3881236 is about 1970.0852773421. The cubic root of 3881236 is about 157.1532440202.

It can be divided in two parts, 388123 and 6, that added together give a square (388129 = 623²).

The spelling of 3881236 in words is "three million, eight hundred eighty-one thousand, two hundred thirty-six".