2858856 has 192 divisors, whose sum is σ = 10342080. Its totient is φ = 645120.

The previous prime is 2858833. The next prime is 2858893. The reversal of 2858856 is 6588582.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an Ulam number.

Its product of digits (153600) is a multiple of the sum of its prime factors (64).

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 47 ways as a sum of consecutive naturals, for example, 168160 + ... + 168176.

It is an arithmetic number, because the mean of its divisors is an integer number (53865).

2^2858856 is an apocalyptic number.

2858856 is a gapful number since it is divisible by the number (26) 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 2858856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5171040).

2858856 is an abundant number, since it is smaller than the sum of its proper divisors (7483224).

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

2858856 is a wasteful number, since it uses less digits than its factorization.

2858856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64 (or 53 counting only the distinct ones).

The product of its digits is 153600, while the sum is 42.

The square root of 2858856 is about 1690.8151880084. The cubic root of 2858856 is about 141.9266962790.

It can be divided in two parts, 2 and 858856, that added together give a palindrome (858858).

The spelling of 2858856 in words is "two million, eight hundred fifty-eight thousand, eight hundred fifty-six".