170000072 has 16 divisors (see below), whose sum is σ = 347727600. Its totient is φ = 77272720.

The previous prime is 170000029. The next prime is 170000093. The reversal of 170000072 is 270000071.

It is a happy number.

170000072 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 170000072.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 965822 + ... + 965997.

It is an arithmetic number, because the mean of its divisors is an integer number (21732975).

Almost surely, 2^170000072 is an apocalyptic number.

It is an amenable number.

170000072 is an abundant number, since it is smaller than the sum of its proper divisors (177727528).

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

170000072 is a wasteful number, since it uses less digits than its factorization.

170000072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1931836 (or 1931832 counting only the distinct ones).

The product of its (nonzero) digits is 98, while the sum is 17.

The square root of 170000072 is about 13038.4075714790. The cubic root of 170000072 is about 553.9659038824.

Subtracting 170000072 from its reverse (270000071), we obtain a palindrome (99999999).

The spelling of 170000072 in words is "one hundred seventy million, seventy-two", and thus it is an aban number.