16541988 has 12 divisors (see below), whose sum is σ = 38598000. Its totient is φ = 5513992.

The previous prime is 16541981. The next prime is 16542017. The reversal of 16541988 is 88914561.

16541988 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (16541981) 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, 689238 + ... + 689261.

It is an arithmetic number, because the mean of its divisors is an integer number (3216500).

Almost surely, 2^16541988 is an apocalyptic number.

It is an amenable number.

16541988 is an abundant number, since it is smaller than the sum of its proper divisors (22056012).

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

16541988 is a wasteful number, since it uses less digits than its factorization.

16541988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1378506 (or 1378504 counting only the distinct ones).

The product of its digits is 69120, while the sum is 42.

The square root of 16541988 is about 4067.1842839980. The cubic root of 16541988 is about 254.7979329615.

The spelling of 16541988 in words is "sixteen million, five hundred forty-one thousand, nine hundred eighty-eight".