16987344 has 40 divisors (see below), whose sum is σ = 47874912. Its totient is φ = 5147520.

The previous prime is 16987343. The next prime is 16987379. The reversal of 16987344 is 44378961.

It is a junction number, because it is equal to n+sod(n) for n = 16987296 and 16987305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16987343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15559 + ... + 16614.

Almost surely, 2^16987344 is an apocalyptic number.

It is an amenable number.

16987344 is an abundant number, since it is smaller than the sum of its proper divisors (30887568).

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

16987344 is a wasteful number, since it uses less digits than its factorization.

16987344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32195 (or 32189 counting only the distinct ones).

The product of its digits is 145152, while the sum is 42.

The square root of 16987344 is about 4121.5705744291. The cubic root of 16987344 is about 257.0643351076.

The spelling of 16987344 in words is "sixteen million, nine hundred eighty-seven thousand, three hundred forty-four".