7172406 has 12 divisors (see below), whose sum is σ = 15540252. Its totient is φ = 2390796.

The previous prime is 7172387. The next prime is 7172411. The reversal of 7172406 is 6042717.

It is a self number, because there is not a number n which added to its sum of digits gives 7172406.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 199216 + ... + 199251.

It is an arithmetic number, because the mean of its divisors is an integer number (1295021).

Almost surely, 2^7172406 is an apocalyptic number.

7172406 is an abundant number, since it is smaller than the sum of its proper divisors (8367846).

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

7172406 is a wasteful number, since it uses less digits than its factorization.

7172406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398475 (or 398472 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 7172406 is about 2678.1347986985. The cubic root of 7172406 is about 192.8508785737.

The spelling of 7172406 in words is "seven million, one hundred seventy-two thousand, four hundred six".