16497680 has 20 divisors (see below), whose sum is σ = 38357292. Its totient is φ = 6599040.

The previous prime is 16497659. The next prime is 16497683. The reversal of 16497680 is 8679461.

It can be written as a sum of positive squares in 2 ways, for example, as 11262736 + 5234944 = 3356^2 + 2288^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (16497683) 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 3 ways as a sum of consecutive naturals, for example, 103031 + ... + 103190.

Almost surely, 2^16497680 is an apocalyptic number.

16497680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16497680 is an abundant number, since it is smaller than the sum of its proper divisors (21859612).

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

16497680 is a wasteful number, since it uses less digits than its factorization.

16497680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206234 (or 206228 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 16497680 is about 4061.7336200199. The cubic root of 16497680 is about 254.5702359918.

The spelling of 16497680 in words is "sixteen million, four hundred ninety-seven thousand, six hundred eighty".