168642032 has 40 divisors (see below), whose sum is σ = 353269056. Its totient is φ = 77527296.

The previous prime is 168642029. The next prime is 168642037. The reversal of 168642032 is 230246861.

It is a self number, because there is not a number n which added to its sum of digits gives 168642032.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168642037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56153 + ... + 59079.

Almost surely, 2^168642032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 168642032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176634528).

168642032 is an abundant number, since it is smaller than the sum of its proper divisors (184627024).

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

168642032 is a wasteful number, since it uses less digits than its factorization.

168642032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3225 (or 3219 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 168642032 is about 12986.2247015828. The cubic root of 168642032 is about 552.4868455745.

Adding to 168642032 its reverse (230246861), we get a palindrome (398888893).

The spelling of 168642032 in words is "one hundred sixty-eight million, six hundred forty-two thousand, thirty-two".