16403012 has 12 divisors (see below), whose sum is σ = 28776720. Its totient is φ = 8181096.

The previous prime is 16402949. The next prime is 16403017. The reversal of 16403012 is 21030461.

It is not an unprimeable number, because it can be changed into a prime (16403017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3218 + ... + 6569.

It is an arithmetic number, because the mean of its divisors is an integer number (2398060).

Almost surely, 2^16403012 is an apocalyptic number.

It is an amenable number.

16403012 is a deficient number, since it is larger than the sum of its proper divisors (12373708).

16403012 is a wasteful number, since it uses less digits than its factorization.

16403012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10210 (or 10208 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 16403012 is about 4050.0632093833. The cubic root of 16403012 is about 254.0823714491.

Adding to 16403012 its reverse (21030461), we get a palindrome (37433473).

The spelling of 16403012 in words is "sixteen million, four hundred three thousand, twelve".