17228997 has 16 divisors (see below), whose sum is σ = 25754880. Its totient is φ = 11382336.

The previous prime is 17228993. The next prime is 17228999. The reversal of 17228997 is 79982271.

It is not a de Polignac number, because 17228997 - 2² = 17228993 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17228993) 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 15 ways as a sum of consecutive naturals, for example, 228 + ... + 5874.

It is an arithmetic number, because the mean of its divisors is an integer number (1609680).

Almost surely, 2^17228997 is an apocalyptic number.

It is an amenable number.

17228997 is a deficient number, since it is larger than the sum of its proper divisors (8525883).

17228997 is a wasteful number, since it uses less digits than its factorization.

17228997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5769 (or 5763 counting only the distinct ones).

The product of its digits is 127008, while the sum is 45.

The square root of 17228997 is about 4150.7826972753. The cubic root of 17228997 is about 258.2775541959.

It can be divided in two parts, 17228 and 997, that added together give a square (18225 = 135²).

The spelling of 17228997 in words is "seventeen million, two hundred twenty-eight thousand, nine hundred ninety-seven".