2857171968 has 660 divisors, whose sum is σ = 10729800840. Its totient is φ = 752467968.

The previous prime is 2857171951. The next prime is 2857171979. The reversal of 2857171968 is 8691717582.

2857171968 is a `hidden beast` number, since 2 + 8 + 571 + 7 + 1 + 9 + 68 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

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 59 ways as a sum of consecutive naturals, for example, 77220846 + ... + 77220882.

It is an arithmetic number, because the mean of its divisors is an integer number (16257274).

Almost surely, 2^2857171968 is an apocalyptic number.

2857171968 is a gapful number since it is divisible by the number (28) 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 2857171968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5364900420).

2857171968 is an abundant number, since it is smaller than the sum of its proper divisors (7872628872).

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

2857171968 is a wasteful number, since it uses less digits than its factorization.

2857171968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102 (or 68 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 54.

The square root of 2857171968 is about 53452.5206889254. The cubic root of 2857171968 is about 1418.9882312001.

The spelling of 2857171968 in words is "two billion, eight hundred fifty-seven million, one hundred seventy-one thousand, nine hundred sixty-eight".