857382012 has 72 divisors (see below), whose sum is σ = 2316380976. Its totient is φ = 266448384.

The previous prime is 857381947. The next prime is 857382047. The reversal of 857382012 is 210283758.

857382012 is a `hidden beast` number, since 8 + 573 + 82 + 0 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58938 + ... + 72030.

It is an arithmetic number, because the mean of its divisors is an integer number (32171958).

Almost surely, 2^857382012 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 857382012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1158190488).

857382012 is an abundant number, since it is smaller than the sum of its proper divisors (1458998964).

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

857382012 is a wasteful number, since it uses less digits than its factorization.

857382012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13227 (or 13222 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 857382012 is about 29281.0862503426. The cubic root of 857382012 is about 950.0025898360.

The spelling of 857382012 in words is "eight hundred fifty-seven million, three hundred eighty-two thousand, twelve".