168402 has 32 divisors (see below), whose sum is σ = 387072. Its totient is φ = 48384.

The previous prime is 168391. The next prime is 168409. The reversal of 168402 is 204861.

It is not an unprimeable number, because it can be changed into a prime (168409) by changing a digit.

168402 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1263 + ... + 1389.

It is an arithmetic number, because the mean of its divisors is an integer number (12096).

2¹⁶⁸⁴⁰² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 168402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193536).

168402 is an abundant number, since it is smaller than the sum of its proper divisors (218670).

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

168402 is a wasteful number, since it uses less digits than its factorization.

168402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 168402 is about 410.3681274173. The cubic root of 168402 is about 55.2224598794. Note that the first 3 decimals are identical.

The spelling of 168402 in words is "one hundred sixty-eight thousand, four hundred two".