168820992 has 108 divisors (see below), whose sum is σ = 497427840. Its totient is φ = 55041024.

The previous prime is 168820979. The next prime is 168821011. The reversal of 168820992 is 299028861.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 107509 + ... + 109067.

Almost surely, 2^168820992 is an apocalyptic number.

168820992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 168820992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248713920).

168820992 is an abundant number, since it is smaller than the sum of its proper divisors (328606848).

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

168820992 is a wasteful number, since it uses less digits than its factorization.

168820992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1628 (or 1611 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 168820992 is about 12993.1132527967. The cubic root of 168820992 is about 552.6822063063.

The spelling of 168820992 in words is "one hundred sixty-eight million, eight hundred twenty thousand, nine hundred ninety-two".