72171006 has 16 divisors (see below), whose sum is σ = 151939200. Its totient is φ = 22790808.

The previous prime is 72170977. The next prime is 72171013. The reversal of 72171006 is 60017127.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 316426 + ... + 316653.

It is an arithmetic number, because the mean of its divisors is an integer number (9496200).

Almost surely, 2^72171006 is an apocalyptic number.

72171006 is an abundant number, since it is smaller than the sum of its proper divisors (79768194).

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

72171006 is a wasteful number, since it uses less digits than its factorization.

72171006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633103.

The product of its (nonzero) digits is 588, while the sum is 24.

The square root of 72171006 is about 8495.3520233125. The cubic root of 72171006 is about 416.3458623642.

The spelling of 72171006 in words is "seventy-two million, one hundred seventy-one thousand, six".