28805373 has 6 divisors (see below), whose sum is σ = 41607774. Its totient is φ = 19203576.

The previous prime is 28805369. The next prime is 28805383. The reversal of 28805373 is 37350882.

28805373 is a `hidden beast` number, since 288 + 0 + 5 + 373 = 666.

It can be written as a sum of positive squares in only one way, i.e., 21930489 + 6874884 = 4683^2 + 2622^2 .

It is not a de Polignac number, because 28805373 - 2² = 28805369 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28805303) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1600290 + ... + 1600307.

It is an arithmetic number, because the mean of its divisors is an integer number (6934629).

Almost surely, 2^28805373 is an apocalyptic number.

It is an amenable number.

28805373 is a deficient number, since it is larger than the sum of its proper divisors (12802401).

28805373 is a wasteful number, since it uses less digits than its factorization.

28805373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3200603 (or 3200600 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 28805373 is about 5367.0637223719. The cubic root of 28805373 is about 306.5428337193.

The spelling of 28805373 in words is "twenty-eight million, eight hundred five thousand, three hundred seventy-three".