172030216 has 8 divisors (see below), whose sum is σ = 322556670. Its totient is φ = 86015104.

The previous prime is 172030181. The next prime is 172030249. The reversal of 172030216 is 612030271.

172030216 is digitally balanced in base 3, 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., 113507716 + 58522500 = 10654^2 + 7650^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10751881 + ... + 10751896.

Almost surely, 2^172030216 is an apocalyptic number.

It is an amenable number.

172030216 is a deficient number, since it is larger than the sum of its proper divisors (150526454).

172030216 is a wasteful number, since it uses less digits than its factorization.

172030216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21503783 (or 21503779 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 172030216 is about 13116.0289722156. The cubic root of 172030216 is about 556.1623406704.

Adding to 172030216 its reverse (612030271), we get a palindrome (784060487).

The spelling of 172030216 in words is "one hundred seventy-two million, thirty thousand, two hundred sixteen".