16681352 has 32 divisors (see below), whose sum is σ = 33355800. Its totient is φ = 7793664.

The previous prime is 16681337. The next prime is 16681361. The reversal of 16681352 is 25318661.

It is a happy number.

16681352 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 4 ways, for example, as 15952036 + 729316 = 3994^2 + 854^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23174 + ... + 23882.

Almost surely, 2^16681352 is an apocalyptic number.

It is an amenable number.

16681352 is a deficient number, since it is larger than the sum of its proper divisors (16674448).

16681352 is a wasteful number, since it uses less digits than its factorization.

16681352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905 (or 901 counting only the distinct ones).

The product of its digits is 8640, while the sum is 32.

The square root of 16681352 is about 4084.2810872906. The cubic root of 16681352 is about 255.5114788368.

It can be divided in two parts, 166 and 81352, that added together give a palindrome (81518).

The spelling of 16681352 in words is "sixteen million, six hundred eighty-one thousand, three hundred fifty-two".