8172406 has 32 divisors (see below), whose sum is σ = 14432256. Its totient is φ = 3432000.

The previous prime is 8172391. The next prime is 8172419. The reversal of 8172406 is 6042718.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15426 + ... + 15946.

It is an arithmetic number, because the mean of its divisors is an integer number (451008).

Almost surely, 2^8172406 is an apocalyptic number.

8172406 is a deficient number, since it is larger than the sum of its proper divisors (6259850).

8172406 is a wasteful number, since it uses less digits than its factorization.

8172406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 8172406 is about 2858.7420310339. The cubic root of 8172406 is about 201.4265177120.

It can be divided in two parts, 817 and 2406, that added together give a palindrome (3223).

The spelling of 8172406 in words is "eight million, one hundred seventy-two thousand, four hundred six".