3865356 has 72 divisors (see below), whose sum is σ = 10954944. Its totient is φ = 1139040.

The previous prime is 3865349. The next prime is 3865361. The reversal of 3865356 is 6535683.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 3865356.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 16915 + ... + 17141.

It is an arithmetic number, because the mean of its divisors is an integer number (152152).

Almost surely, 2^3865356 is an apocalyptic number.

3865356 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3865356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5477472).

3865356 is an abundant number, since it is smaller than the sum of its proper divisors (7089588).

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

3865356 is a wasteful number, since it uses less digits than its factorization.

3865356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291 (or 286 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 3865356 is about 1966.0508640419. The cubic root of 3865356 is about 156.9386212532.

The spelling of 3865356 in words is "three million, eight hundred sixty-five thousand, three hundred fifty-six".