16628386 has 16 divisors (see below), whose sum is σ = 25502400. Its totient is φ = 8129808.

The previous prime is 16628351. The next prime is 16628387. The reversal of 16628386 is 68382661.

It is a plaindrome in base 12.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (16628387) 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, 17635 + ... + 18553.

It is an arithmetic number, because the mean of its divisors is an integer number (1593900).

Almost surely, 2^16628386 is an apocalyptic number.

16628386 is a deficient number, since it is larger than the sum of its proper divisors (8874014).

16628386 is a wasteful number, since it uses less digits than its factorization.

16628386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1113.

The product of its digits is 82944, while the sum is 40.

The square root of 16628386 is about 4077.7918043961. The cubic root of 16628386 is about 255.2407619726.

The spelling of 16628386 in words is "sixteen million, six hundred twenty-eight thousand, three hundred eighty-six".