16028728885 has 32 divisors (see below), whose sum is σ = 21981208032. Its totient is φ = 11115601920.

The previous prime is 16028728873. The next prime is 16028728913. The reversal of 16028728885 is 58882782061.

It can be written as a sum of positive squares in 16 ways, for example, as 623450961 + 15405277924 = 24969^2 + 124118^2 .

It is not a de Polignac number, because 16028728885 - 2¹⁷ = 16028597813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 489115 + ... + 520855.

It is an arithmetic number, because the mean of its divisors is an integer number (686912751).

Almost surely, 2^16028728885 is an apocalyptic number.

It is an amenable number.

16028728885 is a deficient number, since it is larger than the sum of its proper divisors (5952479147).

16028728885 is a wasteful number, since it uses less digits than its factorization.

16028728885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32233.

The product of its (nonzero) digits is 3440640, while the sum is 55.

The spelling of 16028728885 in words is "sixteen billion, twenty-eight million, seven hundred twenty-eight thousand, eight hundred eighty-five".