16728465 has 24 divisors (see below), whose sum is σ = 28987200. Its totient is φ = 8234304.

The previous prime is 16728463. The next prime is 16728469. The reversal of 16728465 is 56482761.

It is not a de Polignac number, because 16728465 - 2¹ = 16728463 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16728463) 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 23 ways as a sum of consecutive naturals, for example, 765 + ... + 5834.

It is an arithmetic number, because the mean of its divisors is an integer number (1207800).

Almost surely, 2^16728465 is an apocalyptic number.

16728465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16728465 is a deficient number, since it is larger than the sum of its proper divisors (12258735).

16728465 is a wasteful number, since it uses less digits than its factorization.

16728465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6633 (or 6620 counting only the distinct ones).

The product of its digits is 80640, while the sum is 39.

The square root of 16728465 is about 4090.0446207835. The cubic root of 16728465 is about 255.7517990297.

The spelling of 16728465 in words is "sixteen million, seven hundred twenty-eight thousand, four hundred sixty-five".