6390172 has 12 divisors (see below), whose sum is σ = 11372760. Its totient is φ = 3140816.

The previous prime is 6390161. The next prime is 6390173. The reversal of 6390172 is 2710936.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 6390172.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6390173) 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, 13303 + ... + 13774.

It is an arithmetic number, because the mean of its divisors is an integer number (947730).

Almost surely, 2^6390172 is an apocalyptic number.

It is an amenable number.

6390172 is a deficient number, since it is larger than the sum of its proper divisors (4982588).

6390172 is a wasteful number, since it uses less digits than its factorization.

6390172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27140 (or 27138 counting only the distinct ones).

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

The square root of 6390172 is about 2527.8789527982. The cubic root of 6390172 is about 185.5684681248.

The spelling of 6390172 in words is "six million, three hundred ninety thousand, one hundred seventy-two".