17428985 has 16 divisors (see below), whose sum is σ = 25161600. Its totient is φ = 11321856.

The previous prime is 17428967. The next prime is 17428993. The reversal of 17428985 is 58982471.

It is not a de Polignac number, because 17428985 - 2¹² = 17424889 is a prime.

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, 12440 + ... + 13769.

It is an arithmetic number, because the mean of its divisors is an integer number (1572600).

Almost surely, 2^17428985 is an apocalyptic number.

It is an amenable number.

17428985 is a deficient number, since it is larger than the sum of its proper divisors (7732615).

17428985 is a wasteful number, since it uses less digits than its factorization.

17428985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26240.

The product of its digits is 161280, while the sum is 44.

The square root of 17428985 is about 4174.8035881943. The cubic root of 17428985 is about 259.2730432971.

The spelling of 17428985 in words is "seventeen million, four hundred twenty-eight thousand, nine hundred eighty-five".