16087284 has 36 divisors (see below), whose sum is σ = 41130180. Its totient is φ = 5301120.

The previous prime is 16087283. The next prime is 16087297. The reversal of 16087284 is 48278061.

It can be written as a sum of positive squares in 2 ways, for example, as 9180900 + 6906384 = 3030^2 + 2628^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16087283) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 694 + ... + 5714.

It is an arithmetic number, because the mean of its divisors is an integer number (1142505).

Almost surely, 2^16087284 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16087284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20565090).

16087284 is an abundant number, since it is smaller than the sum of its proper divisors (25042896).

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

16087284 is a wasteful number, since it uses less digits than its factorization.

16087284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5120 (or 5115 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 16087284 is about 4010.8956605726. The cubic root of 16087284 is about 252.4415915614.

The spelling of 16087284 in words is "sixteen million, eighty-seven thousand, two hundred eighty-four".