3886278 has 48 divisors (see below), whose sum is σ = 8790768. Its totient is φ = 1144000.

The previous prime is 3886273. The next prime is 3886283. The reversal of 3886278 is 8726883.

It is an interprime number because it is at equal distance from previous prime (3886273) and next prime (3886283).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3886273) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38428 + ... + 38528.

It is an arithmetic number, because the mean of its divisors is an integer number (183141).

Almost surely, 2^3886278 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3886278, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4395384).

3886278 is an abundant number, since it is smaller than the sum of its proper divisors (4904490).

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

3886278 is a wasteful number, since it uses less digits than its factorization.

3886278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181 (or 170 counting only the distinct ones).

The product of its digits is 129024, while the sum is 42.

The square root of 3886278 is about 1971.3645020645. The cubic root of 3886278 is about 157.2212656325.

It can be divided in two parts, 388 and 6278, that added together give a palindrome (6666).

The spelling of 3886278 in words is "three million, eight hundred eighty-six thousand, two hundred seventy-eight".