168812856 has 128 divisors (see below), whose sum is σ = 512870400. Its totient is φ = 51217920.

The previous prime is 168812851. The next prime is 168812869. The reversal of 168812856 is 658218861.

Its product of digits (184320) is a multiple of the sum of its prime divisors (1536).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168812851) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 113091 + ... + 114573.

It is an arithmetic number, because the mean of its divisors is an integer number (4006800).

Almost surely, 2^168812856 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 168812856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256435200).

168812856 is an abundant number, since it is smaller than the sum of its proper divisors (344057544).

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

168812856 is a wasteful number, since it uses less digits than its factorization.

168812856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1546 (or 1536 counting only the distinct ones).

The product of its digits is 184320, while the sum is 45.

The square root of 168812856 is about 12992.8001600887. The cubic root of 168812856 is about 552.6733276817.

The spelling of 168812856 in words is "one hundred sixty-eight million, eight hundred twelve thousand, eight hundred fifty-six".