168545072 has 40 divisors (see below), whose sum is σ = 348366096. Its totient is φ = 78718976.

The previous prime is 168545057. The next prime is 168545087. The reversal of 168545072 is 270545861.

It is an interprime number because it is at equal distance from previous prime (168545057) and next prime (168545087).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35003 + ... + 39525.

Almost surely, 2^168545072 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 168545072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174183048).

168545072 is an abundant number, since it is smaller than the sum of its proper divisors (179821024).

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

168545072 is a wasteful number, since it uses less digits than its factorization.

168545072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4685 (or 4679 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 38.

The square root of 168545072 is about 12982.4909782368. The cubic root of 168545072 is about 552.3809419757.

The spelling of 168545072 in words is "one hundred sixty-eight million, five hundred forty-five thousand, seventy-two".