16640132 has 12 divisors (see below), whose sum is σ = 30386496. Its totient is φ = 7958280.

The previous prime is 16640123. The next prime is 16640167. The reversal of 16640132 is 23104661.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a junction number, because it is equal to n+sod(n) for n = 16640098 and 16640107.

It is an unprimeable number.

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, 90344 + ... + 90527.

It is an arithmetic number, because the mean of its divisors is an integer number (2532208).

Almost surely, 2^16640132 is an apocalyptic number.

It is an amenable number.

16640132 is a deficient number, since it is larger than the sum of its proper divisors (13746364).

16640132 is a wasteful number, since it uses less digits than its factorization.

16640132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180898 (or 180896 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 16640132 is about 4079.2317904233. The cubic root of 16640132 is about 255.3008470252.

Adding to 16640132 its reverse (23104661), we get a palindrome (39744793).

The spelling of 16640132 in words is "sixteen million, six hundred forty thousand, one hundred thirty-two".