168890928 has 80 divisors (see below), whose sum is σ = 456208896. Its totient is φ = 53786880.

The previous prime is 168890923. The next prime is 168890959. The reversal of 168890928 is 829098861.

It is not an unprimeable number, because it can be changed into a prime (168890921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96138 + ... + 97878.

Almost surely, 2^168890928 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 168890928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228104448).

168890928 is an abundant number, since it is smaller than the sum of its proper divisors (287317968).

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

168890928 is a wasteful number, since it uses less digits than its factorization.

168890928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1842 (or 1836 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 51.

The square root of 168890928 is about 12995.8042459865. The cubic root of 168890928 is about 552.7585140493.

The spelling of 168890928 in words is "one hundred sixty-eight million, eight hundred ninety thousand, nine hundred twenty-eight".