2573856 has 72 divisors (see below), whose sum is σ = 7613424. Its totient is φ = 855360.

The previous prime is 2573833. The next prime is 2573869. The reversal of 2573856 is 6583752.

2573856 is a `hidden beast` number, since 2 + 573 + 85 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-3 number, since 3×2573856³ = 51153339535465218048, which contains 333 as substring.

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

It is a d-powerful number, because it can be written as 2²⁰ + 5³ + 7⁷ + 3⁷ + 8⁶ + 5⁸ + 6⁶ .

Its product of digits (50400) is a multiple of the sum of its prime divisors (336).

It is a self number, because there is not a number n which added to its sum of digits gives 2573856.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7611 + ... + 7941.

It is an arithmetic number, because the mean of its divisors is an integer number (105742).

2^2573856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2573856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3806712).

2573856 is an abundant number, since it is smaller than the sum of its proper divisors (5039568).

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

2573856 is an equidigital number, since it uses as much as digits as its factorization.

2573856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356 (or 336 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 2573856 is about 1604.3241567713. The cubic root of 2573856 is about 137.0444383164.

The spelling of 2573856 in words is "two million, five hundred seventy-three thousand, eight hundred fifty-six".