168897992 has 64 divisors (see below), whose sum is σ = 356011200. Its totient is φ = 74649600.

The previous prime is 168897991. The next prime is 168898003. The reversal of 168897992 is 299798861.

It is not an unprimeable number, because it can be changed into a prime (168897991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 420992 + ... + 421392.

It is an arithmetic number, because the mean of its divisors is an integer number (5562675).

Almost surely, 2^168897992 is an apocalyptic number.

It is an amenable number.

168897992 is an abundant number, since it is smaller than the sum of its proper divisors (187113208).

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

168897992 is a wasteful number, since it uses less digits than its factorization.

168897992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606 (or 602 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 59.

The square root of 168897992 is about 12996.0760231695. The cubic root of 168897992 is about 552.7662204662.

The spelling of 168897992 in words is "one hundred sixty-eight million, eight hundred ninety-seven thousand, nine hundred ninety-two".