168387856 has 80 divisors (see below), whose sum is σ = 425222784. Its totient is φ = 62687232.

The previous prime is 168387841. The next prime is 168387883. The reversal of 168387856 is 658783861.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21351 + ... + 28153.

Almost surely, 2^168387856 is an apocalyptic number.

168387856 is a gapful number since it is divisible by the number (16) 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 168387856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212611392).

168387856 is an abundant number, since it is smaller than the sum of its proper divisors (256834928).

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

168387856 is a wasteful number, since it uses less digits than its factorization.

168387856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6848 (or 6842 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 52.

The square root of 168387856 is about 12976.4346413027. The cubic root of 168387856 is about 552.2091380045.

The spelling of 168387856 in words is "one hundred sixty-eight million, three hundred eighty-seven thousand, eight hundred fifty-six".