16649982 has 16 divisors (see below), whose sum is σ = 37000080. Its totient is φ = 5549976.

The previous prime is 16649959. The next prime is 16649989. The reversal of 16649982 is 28994661.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16649989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154113 + ... + 154220.

It is an arithmetic number, because the mean of its divisors is an integer number (2312505).

Almost surely, 2^16649982 is an apocalyptic number.

16649982 is an abundant number, since it is smaller than the sum of its proper divisors (20350098).

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

16649982 is a wasteful number, since it uses less digits than its factorization.

16649982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308344 (or 308338 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 16649982 is about 4080.4389469762. The cubic root of 16649982 is about 255.3512115559.

The spelling of 16649982 in words is "sixteen million, six hundred forty-nine thousand, nine hundred eighty-two".