172872006 has 16 divisors (see below), whose sum is σ = 351604800. Its totient is φ = 56647208.

The previous prime is 172872001. The next prime is 172872017. The reversal of 172872006 is 600278271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172872001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243816 + ... + 244523.

It is an arithmetic number, because the mean of its divisors is an integer number (21975300).

Almost surely, 2^172872006 is an apocalyptic number.

172872006 is an abundant number, since it is smaller than the sum of its proper divisors (178732794).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

172872006 is a wasteful number, since it uses less digits than its factorization.

172872006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488403.

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 172872006 is about 13148.0799358690. The cubic root of 172872006 is about 557.0680155504.

The spelling of 172872006 in words is "one hundred seventy-two million, eight hundred seventy-two thousand, six".