168956928 has 264 divisors, whose sum is σ = 584164672. Its totient is φ = 47775744.

The previous prime is 168956917. The next prime is 168956947. The reversal of 168956928 is 829659861.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1741776 + ... + 1741872.

Almost surely, 2^168956928 is an apocalyptic number.

168956928 is a gapful number since it is divisible by the number (18) 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 168956928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (292082336).

168956928 is an abundant number, since it is smaller than the sum of its proper divisors (415207744).

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

168956928 is an frugal number, since it uses more digits than its factorization.

168956928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 109 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 54.

The square root of 168956928 is about 12998.3432790491. The cubic root of 168956928 is about 552.8305078724.

The spelling of 168956928 in words is "one hundred sixty-eight million, nine hundred fifty-six thousand, nine hundred twenty-eight".