168091392 has 72 divisors (see below), whose sum is σ = 511294336. Its totient is φ = 48024576.

The previous prime is 168091373. The next prime is 168091433. The reversal of 168091392 is 293190861.

It is a self number, because there is not a number n which added to its sum of digits gives 168091392.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10258 + ... + 21009.

Almost surely, 2^168091392 is an apocalyptic number.

168091392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

168091392 is an abundant number, since it is smaller than the sum of its proper divisors (343202944).

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

168091392 is an equidigital number, since it uses as much as digits as its factorization.

168091392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31293 (or 31279 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 168091392 is about 12965.0064404149. The cubic root of 168091392 is about 551.8848741215.

The spelling of 168091392 in words is "one hundred sixty-eight million, ninety-one thousand, three hundred ninety-two".