17428225 has 12 divisors (see below), whose sum is σ = 22749040. Its totient is φ = 13208400.

The previous prime is 17428223. The next prime is 17428253. The reversal of 17428225 is 52282471.

It is a happy number.

It is not a de Polignac number, because 17428225 - 2¹ = 17428223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (17428223) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 17871 + ... + 18820.

Almost surely, 2^17428225 is an apocalyptic number.

It is an amenable number.

17428225 is a deficient number, since it is larger than the sum of its proper divisors (5320815).

17428225 is a wasteful number, since it uses less digits than its factorization.

17428225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36720 (or 36715 counting only the distinct ones).

The product of its digits is 8960, while the sum is 31.

The square root of 17428225 is about 4174.7125649558. The cubic root of 17428225 is about 259.2692746635.

The spelling of 17428225 in words is "seventeen million, four hundred twenty-eight thousand, two hundred twenty-five".