168857982 has 24 divisors (see below), whose sum is σ = 367062696. Its totient is φ = 56100816.

The previous prime is 168857971. The next prime is 168857987. The reversal of 168857982 is 289758861.

168857982 is a `hidden beast` number, since 1 + 68 + 8 + 579 + 8 + 2 = 666.

It is a super-2 number, since 2×168857982² = 57026036170224648, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168857987) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9753 + ... + 20804.

It is an arithmetic number, because the mean of its divisors is an integer number (15294279).

Almost surely, 2^168857982 is an apocalyptic number.

168857982 is an abundant number, since it is smaller than the sum of its proper divisors (198204714).

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

168857982 is a wasteful number, since it uses less digits than its factorization.

168857982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30872 (or 30869 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 54.

The square root of 168857982 is about 12994.5366212112. The cubic root of 168857982 is about 552.7225690235.

The spelling of 168857982 in words is "one hundred sixty-eight million, eight hundred fifty-seven thousand, nine hundred eighty-two".