6857728944 has 80 divisors (see below), whose sum is σ = 20166637824. Its totient is φ = 1987744000.

The previous prime is 6857728939. The next prime is 6857728949. The reversal of 6857728944 is 4498277586.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6857728939) and next prime (6857728949).

It is not an unprimeable number, because it can be changed into a prime (6857728949) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 270207 + ... + 294494.

Almost surely, 2^6857728944 is an apocalyptic number.

It is an amenable number.

6857728944 is an abundant number, since it is smaller than the sum of its proper divisors (13308908880).

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

6857728944 is a wasteful number, since it uses less digits than its factorization.

6857728944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564746 (or 564740 counting only the distinct ones).

The product of its digits is 27095040, while the sum is 60.

The square root of 6857728944 is about 82811.4058810741. The cubic root of 6857728944 is about 1899.8826283913.

The spelling of 6857728944 in words is "six billion, eight hundred fifty-seven million, seven hundred twenty-eight thousand, nine hundred forty-four".