168333990 has 96 divisors (see below), whose sum is σ = 450455040. Its totient is φ = 40223040.

The previous prime is 168333967. The next prime is 168334031. The reversal of 168333990 is 99333861.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 286477 + ... + 287063.

It is an arithmetic number, because the mean of its divisors is an integer number (4692240).

Almost surely, 2^168333990 is an apocalyptic number.

168333990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 168333990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (225227520).

168333990 is an abundant number, since it is smaller than the sum of its proper divisors (282121050).

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

168333990 is a wasteful number, since it uses less digits than its factorization.

168333990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698 (or 687 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 42.

The square root of 168333990 is about 12974.3589437012. The cubic root of 168333990 is about 552.1502492175.

The spelling of 168333990 in words is "one hundred sixty-eight million, three hundred thirty-three thousand, nine hundred ninety".