172886073 has 16 divisors (see below), whose sum is σ = 256921920. Its totient is φ = 102767616.

The previous prime is 172886059. The next prime is 172886083. The reversal of 172886073 is 370688271.

It is not a de Polignac number, because 172886073 - 2¹⁰ = 172885049 is a prime.

It is a super-2 number, since 2×172886073² = 59779188474722658, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (172886003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88240 + ... + 90177.

It is an arithmetic number, because the mean of its divisors is an integer number (16057620).

Almost surely, 2^172886073 is an apocalyptic number.

It is an amenable number.

172886073 is a deficient number, since it is larger than the sum of its proper divisors (84035847).

172886073 is a wasteful number, since it uses less digits than its factorization.

172886073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178456.

The product of its (nonzero) digits is 112896, while the sum is 42.

The square root of 172886073 is about 13148.6148700158. The cubic root of 172886073 is about 557.0831251169.

The spelling of 172886073 in words is "one hundred seventy-two million, eight hundred eighty-six thousand, seventy-three".