857282244 has 108 divisors (see below), whose sum is σ = 2519962704. Its totient is φ = 226070208.

The previous prime is 857282233. The next prime is 857282291. The reversal of 857282244 is 442282758.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 857282196 and 857282205.

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 35 ways as a sum of consecutive naturals, for example, 95059 + ... + 103685.

It is an arithmetic number, because the mean of its divisors is an integer number (23332988).

Almost surely, 2^857282244 is an apocalyptic number.

857282244 is a gapful number since it is divisible by the number (84) 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 857282244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1259981352).

857282244 is an abundant number, since it is smaller than the sum of its proper divisors (1662680460).

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

857282244 is a wasteful number, since it uses less digits than its factorization.

857282244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8674 (or 8652 counting only the distinct ones).

The product of its digits is 286720, while the sum is 42.

The square root of 857282244 is about 29279.3825754574. The cubic root of 857282244 is about 949.9657398540.

The spelling of 857282244 in words is "eight hundred fifty-seven million, two hundred eighty-two thousand, two hundred forty-four".