17172442 has 12 divisors (see below), whose sum is σ = 29964330. Its totient is φ = 7359576.

The previous prime is 17172439. The next prime is 17172473. The reversal of 17172442 is 24427171.

It can be written as a sum of positive squares in only one way, i.e., 15531481 + 1640961 = 3941^2 + 1281^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 17172442.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 87517 + ... + 87712.

Almost surely, 2^17172442 is an apocalyptic number.

17172442 is a deficient number, since it is larger than the sum of its proper divisors (12791888).

17172442 is a wasteful number, since it uses less digits than its factorization.

17172442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175245 (or 175238 counting only the distinct ones).

The product of its digits is 3136, while the sum is 28.

The square root of 17172442 is about 4143.9645268752. The cubic root of 17172442 is about 257.9946416370.

It can be divided in two parts, 1717 and 2442, that multiplied together give a palindrome (4192914).

The spelling of 17172442 in words is "seventeen million, one hundred seventy-two thousand, four hundred forty-two".