16001656 has 16 divisors (see below), whose sum is σ = 32730840. Its totient is φ = 7273440.

The previous prime is 16001599. The next prime is 16001659. The reversal of 16001656 is 65610061.

16001656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 16001656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16001659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90831 + ... + 91006.

Almost surely, 2^16001656 is an apocalyptic number.

It is an amenable number.

16001656 is an abundant number, since it is smaller than the sum of its proper divisors (16729184).

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

16001656 is a wasteful number, since it uses less digits than its factorization.

16001656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181854 (or 181850 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 16001656 is about 4000.2069946442. The cubic root of 16001656 is about 251.9929031343.

The spelling of 16001656 in words is "sixteen million, one thousand, six hundred fifty-six".