28081076 has 24 divisors (see below), whose sum is σ = 53443656. Its totient is φ = 12856320.

The previous prime is 28081073. The next prime is 28081087. The reversal of 28081076 is 67018082.

It can be written as a sum of positive squares in 4 ways, for example, as 5290000 + 22791076 = 2300^2 + 4774^2 .

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28081073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3065 + ... + 8096.

It is an arithmetic number, because the mean of its divisors is an integer number (2226819).

Almost surely, 2^28081076 is an apocalyptic number.

It is an amenable number.

28081076 is a deficient number, since it is larger than the sum of its proper divisors (25362580).

28081076 is a wasteful number, since it uses less digits than its factorization.

28081076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11219 (or 11217 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 28081076 is about 5299.1580463315. The cubic root of 28081076 is about 303.9517034309.

The spelling of 28081076 in words is "twenty-eight million, eighty-one thousand, seventy-six".