2855825784 has 192 divisors, whose sum is σ = 9426456000. Its totient is φ = 762458112.

The previous prime is 2855825729. The next prime is 2855825789. The reversal of 2855825784 is 4875285582.

2855825784 is a `hidden beast` number, since 2 + 8 + 5 + 582 + 57 + 8 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 2855825784.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2855825789) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1275514 + ... + 1277750.

It is an arithmetic number, because the mean of its divisors is an integer number (49096125).

Almost surely, 2^2855825784 is an apocalyptic number.

2855825784 is a gapful number since it is divisible by the number (24) 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 2855825784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4713228000).

2855825784 is an abundant number, since it is smaller than the sum of its proper divisors (6570630216).

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

2855825784 is a wasteful number, since it uses less digits than its factorization.

2855825784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2422 (or 2415 counting only the distinct ones).

The product of its digits is 7168000, while the sum is 54.

The square root of 2855825784 is about 53439.9268712074. The cubic root of 2855825784 is about 1418.7653395484.

The spelling of 2855825784 in words is "two billion, eight hundred fifty-five million, eight hundred twenty-five thousand, seven hundred eighty-four".