172811116 has 12 divisors (see below), whose sum is σ = 312847920. Its totient is φ = 83426000.

The previous prime is 172811113. The next prime is 172811117. The reversal of 172811116 is 611118271.

172811116 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (172811113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 744760 + ... + 744991.

It is an arithmetic number, because the mean of its divisors is an integer number (26070660).

Almost surely, 2^172811116 is an apocalyptic number.

It is an amenable number.

172811116 is a deficient number, since it is larger than the sum of its proper divisors (140036804).

172811116 is a wasteful number, since it uses less digits than its factorization.

172811116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1489784 (or 1489782 counting only the distinct ones).

The product of its digits is 672, while the sum is 28.

The square root of 172811116 is about 13145.7641847098. The cubic root of 172811116 is about 557.0026032732.

Adding to 172811116 its reverse (611118271), we get a palindrome (783929387).

The spelling of 172811116 in words is "one hundred seventy-two million, eight hundred eleven thousand, one hundred sixteen".