168324420 has 192 divisors, whose sum is σ = 559964160. Its totient is φ = 37324800.

The previous prime is 168324383. The next prime is 168324473. The reversal of 168324420 is 24423861.

It is a super-2 number, since 2×168324420² = 56666220736672800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 388524 + ... + 388956.

It is an arithmetic number, because the mean of its divisors is an integer number (2916480).

Almost surely, 2^168324420 is an apocalyptic number.

168324420 is a gapful number since it is divisible by the number (10) 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 168324420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (279982080).

168324420 is an abundant number, since it is smaller than the sum of its proper divisors (391639740).

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

168324420 is a wasteful number, since it uses less digits than its factorization.

168324420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506 (or 504 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 168324420 is about 12973.9901341106. The cubic root of 168324420 is about 552.1397855394.

The spelling of 168324420 in words is "one hundred sixty-eight million, three hundred twenty-four thousand, four hundred twenty".