2856546 has 80 divisors (see below), whose sum is σ = 8015040. Its totient is φ = 738720.

The previous prime is 2856521. The next prime is 2856547. The reversal of 2856546 is 6456582.

2856546 is digitally balanced in base 2, 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 (36) coincides with the sum of the digits of its prime factors.

It is a d-powerful number, because it can be written as 2²⁰ + 8³ + 5² + 6⁶ + 5⁶ + 4⁸ + 6⁸ .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2856546.

It is not an unprimeable number, because it can be changed into a prime (2856547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 12360 + ... + 12588.

It is an arithmetic number, because the mean of its divisors is an integer number (100188).

2^2856546 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2856546, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4007520).

2856546 is an abundant number, since it is smaller than the sum of its proper divisors (5158494).

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

2856546 is a wasteful number, since it uses less digits than its factorization.

2856546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261 (or 252 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 2856546 is about 1690.1319475118. The cubic root of 2856546 is about 141.8884596544. Note that the first 3 decimals are identical.

Adding to 2856546 its sum of digits (36), we get a palindrome (2856582).

The spelling of 2856546 in words is "two million, eight hundred fifty-six thousand, five hundred forty-six".