172173016 has 8 divisors (see below), whose sum is σ = 322824420. Its totient is φ = 86086504.

The previous prime is 172173013. The next prime is 172173017. The reversal of 172173016 is 610371271.

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

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172173013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10760806 + ... + 10760821.

Almost surely, 2^172173016 is an apocalyptic number.

It is an amenable number.

172173016 is a deficient number, since it is larger than the sum of its proper divisors (150651404).

172173016 is a wasteful number, since it uses less digits than its factorization.

172173016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21521633 (or 21521629 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 172173016 is about 13121.4715638148. The cubic root of 172173016 is about 556.3161857701.

The spelling of 172173016 in words is "one hundred seventy-two million, one hundred seventy-three thousand, sixteen".