17980207 has 12 divisors (see below), whose sum is σ = 21172536. Its totient is φ = 15222480.

The previous prime is 17980189. The next prime is 17980241. The reversal of 17980207 is 70208971.

It is not a de Polignac number, because 17980207 - 2¹¹ = 17978159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17980297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1857 + ... + 6277.

It is an arithmetic number, because the mean of its divisors is an integer number (1764378).

Almost surely, 2^17980207 is an apocalyptic number.

17980207 is a deficient number, since it is larger than the sum of its proper divisors (3192329).

17980207 is an equidigital number, since it uses as much as digits as its factorization.

17980207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4518 (or 4511 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 17980207 is about 4240.3074181007. The cubic root of 17980207 is about 261.9780443113.

The spelling of 17980207 in words is "seventeen million, nine hundred eighty thousand, two hundred seven".