168968920 has 32 divisors (see below), whose sum is σ = 386629200. Its totient is φ = 66441088.

The previous prime is 168968911. The next prime is 168968923. The reversal of 168968920 is 29869861.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168968923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33439 + ... + 38158.

Almost surely, 2^168968920 is an apocalyptic number.

168968920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

168968920 is an abundant number, since it is smaller than the sum of its proper divisors (217660280).

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

168968920 is a wasteful number, since it uses less digits than its factorization.

168968920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71667 (or 71663 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 49.

The square root of 168968920 is about 12998.8045604202. The cubic root of 168968920 is about 552.8435869190.

The spelling of 168968920 in words is "one hundred sixty-eight million, nine hundred sixty-eight thousand, nine hundred twenty".