16987392 has 108 divisors (see below), whose sum is σ = 50141364. Its totient is φ = 5529600.

The previous prime is 16987391. The next prime is 16987423. The reversal of 16987392 is 29378961.

It can be written as a sum of positive squares in 2 ways, for example, as 13660416 + 3326976 = 3696^2 + 1824^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16987391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 168142 + ... + 168242.

Almost surely, 2^16987392 is an apocalyptic number.

16987392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16987392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25070682).

16987392 is an abundant number, since it is smaller than the sum of its proper divisors (33153972).

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

16987392 is a wasteful number, since it uses less digits than its factorization.

16987392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196 (or 179 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 16987392 is about 4121.5763974479. The cubic root of 16987392 is about 257.0645772305.

The spelling of 16987392 in words is "sixteen million, nine hundred eighty-seven thousand, three hundred ninety-two".