3172906 has 8 divisors (see below), whose sum is σ = 5192064. Its totient is φ = 1442220.

The previous prime is 3172901. The next prime is 3172907. The reversal of 3172906 is 6092713.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3172901) 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, 72090 + ... + 72133.

It is an arithmetic number, because the mean of its divisors is an integer number (649008).

Almost surely, 2^3172906 is an apocalyptic number.

3172906 is a deficient number, since it is larger than the sum of its proper divisors (2019158).

3172906 is a wasteful number, since it uses less digits than its factorization.

3172906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144236.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 3172906 is about 1781.2652806362. The cubic root of 3172906 is about 146.9441841560.

It can be divided in two parts, 317 and 2906, that added together give a palindrome (3223).

The spelling of 3172906 in words is "three million, one hundred seventy-two thousand, nine hundred six".