3861546 has 32 divisors (see below), whose sum is σ = 8590848. Its totient is φ = 1149120.

The previous prime is 3861521. The next prime is 3861547. The reversal of 3861546 is 6451683.

It is not an unprimeable number, because it can be changed into a prime (3861547) 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, 1620 + ... + 3216.

It is an arithmetic number, because the mean of its divisors is an integer number (268464).

Almost surely, 2^3861546 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3861546, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4295424).

3861546 is an abundant number, since it is smaller than the sum of its proper divisors (4729302).

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

3861546 is a wasteful number, since it uses less digits than its factorization.

3861546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1646.

The product of its digits is 17280, while the sum is 33.

The square root of 3861546 is about 1965.0816776918. The cubic root of 3861546 is about 156.8870406043.

The spelling of 3861546 in words is "three million, eight hundred sixty-one thousand, five hundred forty-six".