28320036 has 12 divisors (see below), whose sum is σ = 66080112. Its totient is φ = 9440008.

The previous prime is 28320031. The next prime is 28320041. The reversal of 28320036 is 63002382.

It is an interprime number because it is at equal distance from previous prime (28320031) and next prime (28320041).

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

It is a junction number, because it is equal to n+sod(n) for n = 28319988 and 28320015.

It is not an unprimeable number, because it can be changed into a prime (28320031) 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, 1179990 + ... + 1180013.

It is an arithmetic number, because the mean of its divisors is an integer number (5506676).

Almost surely, 2^28320036 is an apocalyptic number.

It is an amenable number.

28320036 is an abundant number, since it is smaller than the sum of its proper divisors (37760076).

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

28320036 is a wasteful number, since it uses less digits than its factorization.

28320036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2360010 (or 2360008 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 28320036 is about 5321.6572606661. The cubic root of 28320036 is about 304.8114430711.

The spelling of 28320036 in words is "twenty-eight million, three hundred twenty thousand, thirty-six".