842857272 has 64 divisors (see below), whose sum is σ = 2348985600. Its totient is φ = 280026720.

The previous prime is 842857237. The next prime is 842857273. The reversal of 842857272 is 272758248.

842857272 is a `hidden beast` number, since 8 + 4 + 2 + 8 + 572 + 72 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842857273) 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 15 ways as a sum of consecutive naturals, for example, 60903 + ... + 73449.

It is an arithmetic number, because the mean of its divisors is an integer number (36702900).

Almost surely, 2^842857272 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 842857272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1174492800).

842857272 is an abundant number, since it is smaller than the sum of its proper divisors (1506128328).

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

842857272 is a wasteful number, since it uses less digits than its factorization.

842857272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12873 (or 12863 counting only the distinct ones).

The product of its digits is 501760, while the sum is 45.

The square root of 842857272 is about 29032.0042711488. The cubic root of 842857272 is about 944.6074055787.

The spelling of 842857272 in words is "eight hundred forty-two million, eight hundred fifty-seven thousand, two hundred seventy-two".