28888885 has 8 divisors (see below), whose sum is σ = 34744320. Its totient is φ = 23059344.

The previous prime is 28888883. The next prime is 28888889. The reversal of 28888885 is 58888882.

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 28888885 - 2¹ = 28888883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28888883) 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, 3925 + ... + 8554.

It is an arithmetic number, because the mean of its divisors is an integer number (4343040).

Almost surely, 2^28888885 is an apocalyptic number.

It is an amenable number.

28888885 is a deficient number, since it is larger than the sum of its proper divisors (5855435).

28888885 is a wasteful number, since it uses less digits than its factorization.

28888885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12947.

The product of its digits is 2621440, while the sum is 55.

The square root of 28888885 is about 5374.8381370977. The cubic root of 28888885 is about 306.8387889821.

The spelling of 28888885 in words is "twenty-eight million, eight hundred eighty-eight thousand, eight hundred eighty-five".