857142888 has 96 divisors (see below), whose sum is σ = 2560212000. Its totient is φ = 238267008.

The previous prime is 857142887. The next prime is 857142899. The reversal of 857142888 is 888241758.

It is a super-3 number, since 3×857142888³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 857142888.

It is not an unprimeable number, because it can be changed into a prime (857142887) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33663 + ... + 53361.

It is an arithmetic number, because the mean of its divisors is an integer number (26668875).

Almost surely, 2^857142888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 857142888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1280106000).

857142888 is an abundant number, since it is smaller than the sum of its proper divisors (1703069112).

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

857142888 is a wasteful number, since it uses less digits than its factorization.

857142888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19759 (or 19748 counting only the distinct ones).

The product of its digits is 1146880, while the sum is 51.

The square root of 857142888 is about 29277.0027154420. The cubic root of 857142888 is about 949.9142629920.

The spelling of 857142888 in words is "eight hundred fifty-seven million, one hundred forty-two thousand, eight hundred eighty-eight".