28883405 has 8 divisors (see below), whose sum is σ = 34690200. Its totient is φ = 23086656.

The previous prime is 28883383. The next prime is 28883411. The reversal of 28883405 is 50438882.

It can be written as a sum of positive squares in 4 ways, for example, as 6482116 + 22401289 = 2546^2 + 4733^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28883405 - 2⁶ = 28883341 is a prime.

It is a congruent number.

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, 7331 + ... + 10559.

It is an arithmetic number, because the mean of its divisors is an integer number (4336275).

Almost surely, 2^28883405 is an apocalyptic number.

It is an amenable number.

28883405 is a deficient number, since it is larger than the sum of its proper divisors (5806795).

28883405 is a wasteful number, since it uses less digits than its factorization.

28883405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5023.

The product of its (nonzero) digits is 61440, while the sum is 38.

The square root of 28883405 is about 5374.3283301265. The cubic root of 28883405 is about 306.8193860999.

The spelling of 28883405 in words is "twenty-eight million, eight hundred eighty-three thousand, four hundred five".