168445572 has 36 divisors (see below), whose sum is σ = 407084496. Its totient is φ = 54209120.

The previous prime is 168445559. The next prime is 168445573. The reversal of 168445572 is 275544861.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (168445573) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1747 + ... + 18437.

Almost surely, 2^168445572 is an apocalyptic number.

168445572 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 168445572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203542248).

168445572 is an abundant number, since it is smaller than the sum of its proper divisors (238638924).

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

168445572 is a wasteful number, since it uses less digits than its factorization.

168445572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16756 (or 16725 counting only the distinct ones).

The product of its digits is 268800, while the sum is 42.

The square root of 168445572 is about 12978.6583281940. The cubic root of 168445572 is about 552.2722218529.

The spelling of 168445572 in words is "one hundred sixty-eight million, four hundred forty-five thousand, five hundred seventy-two".