16539738 has 16 divisors (see below), whose sum is σ = 33224256. Its totient is φ = 5489120.

The previous prime is 16539727. The next prime is 16539751. The reversal of 16539738 is 83793561.

16539738 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 Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 16539738.

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, 4518 + ... + 7313.

It is an arithmetic number, because the mean of its divisors is an integer number (2076516).

Almost surely, 2^16539738 is an apocalyptic number.

16539738 is an abundant number, since it is smaller than the sum of its proper divisors (16684518).

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

16539738 is a wasteful number, since it uses less digits than its factorization.

16539738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12069.

The product of its digits is 136080, while the sum is 42.

The square root of 16539738 is about 4066.9076704543. The cubic root of 16539738 is about 254.7863801110.

It can be divided in two parts, 165 and 39738, that added together give a triangular number (39903 = T₂₈₂).

The spelling of 16539738 in words is "sixteen million, five hundred thirty-nine thousand, seven hundred thirty-eight".