16687252 has 6 divisors (see below), whose sum is σ = 29202698. Its totient is φ = 8343624.

The previous prime is 16687247. The next prime is 16687273. The reversal of 16687252 is 25278661.

It is a happy number.

16687252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 15256836 + 1430416 = 3906^2 + 1196^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2085903 + ... + 2085910.

Almost surely, 2^16687252 is an apocalyptic number.

It is an amenable number.

16687252 is a deficient number, since it is larger than the sum of its proper divisors (12515446).

16687252 is a wasteful number, since it uses less digits than its factorization.

16687252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4171817 (or 4171815 counting only the distinct ones).

The product of its digits is 40320, while the sum is 37.

The square root of 16687252 is about 4085.0033047722. The cubic root of 16687252 is about 255.5415990978.

The spelling of 16687252 in words is "sixteen million, six hundred eighty-seven thousand, two hundred fifty-two".