3138856 has 32 divisors (see below), whose sum is σ = 7021440. Its totient is φ = 1286208.

The previous prime is 3138853. The next prime is 3138869. The reversal of 3138856 is 6588313.

It is a happy number.

3138856 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

3138856 is strictly pandigital in base 8.

It is not an unprimeable number, because it can be changed into a prime (3138851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70 + ... + 2506.

It is an arithmetic number, because the mean of its divisors is an integer number (219420).

Almost surely, 2^3138856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3138856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3510720).

3138856 is an abundant number, since it is smaller than the sum of its proper divisors (3882584).

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

3138856 is a wasteful number, since it uses less digits than its factorization.

3138856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2473 (or 2469 counting only the distinct ones).

The product of its digits is 17280, while the sum is 34.

The square root of 3138856 is about 1771.6816869856. The cubic root of 3138856 is about 146.4166493452.

The spelling of 3138856 in words is "three million, one hundred thirty-eight thousand, eight hundred fifty-six".