16651012 has 12 divisors (see below), whose sum is σ = 33302080. Its totient is φ = 7136136.

The previous prime is 16651009. The next prime is 16651021. The reversal of 16651012 is 21015661.

16651012 is an admirable number.

It is an unprimeable number.

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, 297312 + ... + 297367.

Almost surely, 2^16651012 is an apocalyptic number.

It is an amenable number.

16651012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16651012 is a wasteful number, since it uses less digits than its factorization.

16651012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594690 (or 594688 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 16651012 is about 4080.5651569360. The cubic root of 16651012 is about 255.3564769535.

Adding to 16651012 its reverse (21015661), we get a palindrome (37666673).

The spelling of 16651012 in words is "sixteen million, six hundred fifty-one thousand, twelve".