16671320 has 32 divisors (see below), whose sum is σ = 39143520. Its totient is φ = 6378240.

The previous prime is 16671311. The next prime is 16671329. The reversal of 16671320 is 2317661.

It is an interprime number because it is at equal distance from previous prime (16671311) and next prime (16671329).

It is a self number, because there is not a number n which added to its sum of digits gives 16671320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16671329) 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 7 ways as a sum of consecutive naturals, for example, 8141 + ... + 9980.

It is an arithmetic number, because the mean of its divisors is an integer number (1223235).

Almost surely, 2^16671320 is an apocalyptic number.

16671320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16671320 is an abundant number, since it is smaller than the sum of its proper divisors (22472200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16671320 is a wasteful number, since it uses less digits than its factorization.

16671320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18155 (or 18151 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 16671320 is about 4083.0527794776. The cubic root of 16671320 is about 255.4602478739.

Adding to 16671320 its reverse (2317661), we get a palindrome (18988981).

The spelling of 16671320 in words is "sixteen million, six hundred seventy-one thousand, three hundred twenty".