3891136 has 28 divisors (see below), whose sum is σ = 7789672. Its totient is φ = 1928448.

The previous prime is 3891131. The next prime is 3891137. The reversal of 3891136 is 6311983.

It is a junction number, because it is equal to n+sod(n) for n = 3891098 and 3891107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3891131) by changing a digit.

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, 10246 + ... + 10618.

Almost surely, 2^3891136 is an apocalyptic number.

It is an amenable number.

3891136 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

3891136 is a wasteful number, since it uses less digits than its factorization.

3891136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548 (or 538 counting only the distinct ones).

The product of its digits is 3888, while the sum is 31.

The square root of 3891136 is about 1972.5962587413. The cubic root of 3891136 is about 157.2867492715.

The spelling of 3891136 in words is "three million, eight hundred ninety-one thousand, one hundred thirty-six".