2856246720 has 224 divisors, whose sum is σ = 9517367808. Its totient is φ = 724365312.

The previous prime is 2856246707. The next prime is 2856246727. The reversal of 2856246720 is 276426582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2856246727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6115927 + ... + 6116393.

Almost surely, 2^2856246720 is an apocalyptic number.

2856246720 is a gapful number since it is divisible by the number (20) 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 2856246720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4758683904).

2856246720 is an abundant number, since it is smaller than the sum of its proper divisors (6661121088).

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

2856246720 is a wasteful number, since it uses less digits than its factorization.

2856246720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 787 (or 777 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 42.

The square root of 2856246720 is about 53443.8651296854. The cubic root of 2856246720 is about 1418.8350426877.

The spelling of 2856246720 in words is "two billion, eight hundred fifty-six million, two hundred forty-six thousand, seven hundred twenty".