6857235520 has 28 divisors (see below), whose sum is σ = 16328792844. Its totient is φ = 2742894080.

The previous prime is 6857235503. The next prime is 6857235569. The reversal of 6857235520 is 255327586.

It can be written as a sum of positive squares in 2 ways, for example, as 1585313856 + 5271921664 = 39816^2 + 72608^2 .

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 3 ways as a sum of consecutive naturals, for example, 10714111 + ... + 10714750.

It is an arithmetic number, because the mean of its divisors is an integer number (583171173).

Almost surely, 2^6857235520 is an apocalyptic number.

It is an amenable number.

6857235520 is an abundant number, since it is smaller than the sum of its proper divisors (9471557324).

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

6857235520 is a wasteful number, since it uses less digits than its factorization.

6857235520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21428878 (or 21428868 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 43.

The square root of 6857235520 is about 82808.4266243478. The cubic root of 6857235520 is about 1899.8370608194.

The spelling of 6857235520 in words is "six billion, eight hundred fifty-seven million, two hundred thirty-five thousand, five hundred twenty".