857357946 has 28 divisors (see below), whose sum is σ = 1928176602. Its totient is φ = 285785496.

The previous prime is 857357933. The next prime is 857357971. The reversal of 857357946 is 649753758.

It can be written as a sum of positive squares in only one way, i.e., 842450625 + 14907321 = 29025^2 + 3861^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 857357892 and 857357901.

It is an unprimeable number.

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 13 ways as a sum of consecutive naturals, for example, 292561 + ... + 295476.

Almost surely, 2^857357946 is an apocalyptic number.

857357946 is an abundant number, since it is smaller than the sum of its proper divisors (1070818656).

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

857357946 is an equidigital number, since it uses as much as digits as its factorization.

857357946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588057 (or 588042 counting only the distinct ones).

The product of its digits is 6350400, while the sum is 54.

The square root of 857357946 is about 29280.6752995897. The cubic root of 857357946 is about 949.9937011586.

The spelling of 857357946 in words is "eight hundred fifty-seven million, three hundred fifty-seven thousand, nine hundred forty-six".