28888785 has 64 divisors (see below), whose sum is σ = 54604800. Its totient is φ = 14466816.

The previous prime is 28888771. The next prime is 28888841. The reversal of 28888785 is 58788882.

It is not a de Polignac number, because 28888785 - 2⁵ = 28888753 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 183927 + ... + 184083.

It is an arithmetic number, because the mean of its divisors is an integer number (853200).

Almost surely, 2^28888785 is an apocalyptic number.

It is an amenable number.

28888785 is a deficient number, since it is larger than the sum of its proper divisors (25716015).

28888785 is a wasteful number, since it uses less digits than its factorization.

28888785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247 (or 241 counting only the distinct ones).

The product of its digits is 2293760, while the sum is 54.

The square root of 28888785 is about 5374.8288344839. The cubic root of 28888785 is about 306.8384349369.

The spelling of 28888785 in words is "twenty-eight million, eight hundred eighty-eight thousand, seven hundred eighty-five".