16656432 has 40 divisors (see below), whose sum is σ = 46340784. Its totient is φ = 5124864.

The previous prime is 16656421. The next prime is 16656433. The reversal of 16656432 is 23465661.

It is a junction number, because it is equal to n+sod(n) for n = 16656393 and 16656402.

It is not an unprimeable number, because it can be changed into a prime (16656433) 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 7 ways as a sum of consecutive naturals, for example, 12723 + ... + 13970.

Almost surely, 2^16656432 is an apocalyptic number.

16656432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16656432 is an abundant number, since it is smaller than the sum of its proper divisors (29684352).

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

16656432 is a wasteful number, since it uses less digits than its factorization.

16656432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26717 (or 26711 counting only the distinct ones).

The product of its digits is 25920, while the sum is 33.

The square root of 16656432 is about 4081.2292265934. The cubic root of 16656432 is about 255.3841806142.

The spelling of 16656432 in words is "sixteen million, six hundred fifty-six thousand, four hundred thirty-two".