16681952 has 36 divisors (see below), whose sum is σ = 38208240. Its totient is φ = 7148736.

The previous prime is 16681949. The next prime is 16681991. The reversal of 16681952 is 25918661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3752 + ... + 6887.

It is an arithmetic number, because the mean of its divisors is an integer number (1061340).

Almost surely, 2^16681952 is an apocalyptic number.

It is an amenable number.

16681952 is an abundant number, since it is smaller than the sum of its proper divisors (21526288).

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

16681952 is a wasteful number, since it uses less digits than its factorization.

16681952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10663 (or 10648 counting only the distinct ones).

The product of its digits is 25920, while the sum is 38.

The square root of 16681952 is about 4084.3545389694. The cubic root of 16681952 is about 255.5145422385.

The spelling of 16681952 in words is "sixteen million, six hundred eighty-one thousand, nine hundred fifty-two".