168329340 has 120 divisors (see below), whose sum is σ = 546416640. Its totient is φ = 43327872.

The previous prime is 168329339. The next prime is 168329347. The reversal of 168329340 is 43923861.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 168329295 and 168329304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168329347) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 45189 + ... + 48771.

It is an arithmetic number, because the mean of its divisors is an integer number (4553472).

Almost surely, 2^168329340 is an apocalyptic number.

168329340 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 168329340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273208320).

168329340 is an abundant number, since it is smaller than the sum of its proper divisors (378087300).

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

168329340 is a wasteful number, since it uses less digits than its factorization.

168329340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3633 (or 3622 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 168329340 is about 12974.1797428585. The cubic root of 168329340 is about 552.1451650347.

The spelling of 168329340 in words is "one hundred sixty-eight million, three hundred twenty-nine thousand, three hundred forty".