16649732 has 24 divisors (see below), whose sum is σ = 33657120. Its totient is φ = 7122560.

The previous prime is 16649687. The next prime is 16649753. The reversal of 16649732 is 23794661.

It is a nialpdrome in base 11.

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 7 ways as a sum of consecutive naturals, for example, 10382 + ... + 11877.

It is an arithmetic number, because the mean of its divisors is an integer number (1402380).

Almost surely, 2^16649732 is an apocalyptic number.

It is an amenable number.

16649732 is an abundant number, since it is smaller than the sum of its proper divisors (17007388).

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

16649732 is a wasteful number, since it uses less digits than its factorization.

16649732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22291 (or 22289 counting only the distinct ones).

The product of its digits is 54432, while the sum is 38.

The square root of 16649732 is about 4080.4083129020. The cubic root of 16649732 is about 255.3499335140.

Subtracting 16649732 from its reverse (23794661), we obtain a square (7144929 = 2673²).

The spelling of 16649732 in words is "sixteen million, six hundred forty-nine thousand, seven hundred thirty-two".