16728313 has 16 divisors (see below), whose sum is σ = 19922944. Its totient is φ = 13744080.

The previous prime is 16728277. The next prime is 16728319. The reversal of 16728313 is 31382761.

It is not a de Polignac number, because 16728313 - 2²¹ = 14631161 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16728319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27256 + ... + 27862.

It is an arithmetic number, because the mean of its divisors is an integer number (1245184).

Almost surely, 2^16728313 is an apocalyptic number.

It is an amenable number.

16728313 is a deficient number, since it is larger than the sum of its proper divisors (3194631).

16728313 is a wasteful number, since it uses less digits than its factorization.

16728313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772.

The product of its digits is 6048, while the sum is 31.

The square root of 16728313 is about 4090.0260390369. The cubic root of 16728313 is about 255.7510244141.

The spelling of 16728313 in words is "sixteen million, seven hundred twenty-eight thousand, three hundred thirteen".