168087390 has 32 divisors (see below), whose sum is σ = 404559360. Its totient is φ = 44695584.

The previous prime is 168087383. The next prime is 168087407. The reversal of 168087390 is 93780861.

168087390 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2967 + ... + 18573.

It is an arithmetic number, because the mean of its divisors is an integer number (12642480).

Almost surely, 2^168087390 is an apocalyptic number.

168087390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

168087390 is an abundant number, since it is smaller than the sum of its proper divisors (236471970).

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

168087390 is a wasteful number, since it uses less digits than its factorization.

168087390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15976.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 168087390 is about 12964.8521009690. The cubic root of 168087390 is about 551.8804942407.

The spelling of 168087390 in words is "one hundred sixty-eight million, eighty-seven thousand, three hundred ninety".