3806286 has 32 divisors (see below), whose sum is σ = 8401536. Its totient is φ = 1140000.

The previous prime is 3806281. The next prime is 3806287. The reversal of 3806286 is 6826083.

It is a super-2 number, since 2×3806286² = 28975626227592, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3806281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6381 + ... + 6951.

It is an arithmetic number, because the mean of its divisors is an integer number (262548).

Almost surely, 2^3806286 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3806286, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4200768).

3806286 is an abundant number, since it is smaller than the sum of its proper divisors (4595250).

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

3806286 is a wasteful number, since it uses less digits than its factorization.

3806286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 3806286 is about 1950.9705277118. The cubic root of 3806286 is about 156.1350736758.

It can be divided in two parts, 380 and 6286, that added together give a palindrome (6666).

The spelling of 3806286 in words is "three million, eight hundred six thousand, two hundred eighty-six".