173891216 has 10 divisors (see below), whose sum is σ = 336914262. Its totient is φ = 86945600.

The previous prime is 173891213. The next prime is 173891239. The reversal of 173891216 is 612198371.

173891216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 100000000 + 73891216 = 10000^2 + 8596^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 173891216.

It is not an unprimeable number, because it can be changed into a prime (173891213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5434085 + ... + 5434116.

Almost surely, 2^173891216 is an apocalyptic number.

173891216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

173891216 is a deficient number, since it is larger than the sum of its proper divisors (163023046).

173891216 is a wasteful number, since it uses less digits than its factorization.

173891216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10868209 (or 10868203 counting only the distinct ones).

The product of its digits is 18144, while the sum is 38.

The square root of 173891216 is about 13186.7818667027. The cubic root of 173891216 is about 558.1606488367.

The spelling of 173891216 in words is "one hundred seventy-three million, eight hundred ninety-one thousand, two hundred sixteen".