16628873 has 8 divisors (see below), whose sum is σ = 18083592. Its totient is φ = 15227136.

The previous prime is 16628863. The next prime is 16628893. The reversal of 16628873 is 37882661.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 11002489 + 5626384 = 3317^2 + 2372^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16628873 - 2⁶ = 16628809 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16628873.

It is not an unprimeable number, because it can be changed into a prime (16628813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12590 + ... + 13847.

It is an arithmetic number, because the mean of its divisors is an integer number (2260449).

Almost surely, 2^16628873 is an apocalyptic number.

It is an amenable number.

16628873 is a deficient number, since it is larger than the sum of its proper divisors (1454719).

16628873 is a wasteful number, since it uses less digits than its factorization.

16628873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26491.

The product of its digits is 96768, while the sum is 41.

The square root of 16628873 is about 4077.8515176499. The cubic root of 16628873 is about 255.2432537165.

The spelling of 16628873 in words is "sixteen million, six hundred twenty-eight thousand, eight hundred seventy-three".