168421880 has 32 divisors (see below), whose sum is σ = 413400240. Its totient is φ = 61244160.

The previous prime is 168421837. The next prime is 168421889. The reversal of 168421880 is 88124861.

168421880 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168421889) 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, 190949 + ... + 191828.

Almost surely, 2^168421880 is an apocalyptic number.

168421880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

168421880 is an abundant number, since it is smaller than the sum of its proper divisors (244978360).

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

168421880 is a wasteful number, since it uses less digits than its factorization.

168421880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382799 (or 382795 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 38.

The square root of 168421880 is about 12977.7455669311. The cubic root of 168421880 is about 552.2463281338.

The spelling of 168421880 in words is "one hundred sixty-eight million, four hundred twenty-one thousand, eight hundred eighty".