16649432 has 16 divisors (see below), whose sum is σ = 31328640. Its totient is φ = 8295136.

The previous prime is 16649431. The next prime is 16649467. The reversal of 16649432 is 23494661.

It is a junction number, because it is equal to n+sod(n) for n = 16649392 and 16649401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16649431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1208 + ... + 5895.

It is an arithmetic number, because the mean of its divisors is an integer number (1958040).

Almost surely, 2^16649432 is an apocalyptic number.

It is an amenable number.

16649432 is a deficient number, since it is larger than the sum of its proper divisors (14679208).

16649432 is a wasteful number, since it uses less digits than its factorization.

16649432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7402 (or 7398 counting only the distinct ones).

The product of its digits is 31104, while the sum is 35.

The square root of 16649432 is about 4080.3715517095. The cubic root of 16649432 is about 255.3483998469.

The spelling of 16649432 in words is "sixteen million, six hundred forty-nine thousand, four hundred thirty-two".