28310885 has 8 divisors (see below), whose sum is σ = 34382880. Its totient is φ = 22375504.

The previous prime is 28310881. The next prime is 28310903. The reversal of 28310885 is 58801382.

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 28310885 - 2² = 28310881 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 (28310881) 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, 33695 + ... + 34524.

It is an arithmetic number, because the mean of its divisors is an integer number (4297860).

Almost surely, 2^28310885 is an apocalyptic number.

It is an amenable number.

28310885 is a deficient number, since it is larger than the sum of its proper divisors (6071995).

28310885 is an equidigital number, since it uses as much as digits as its factorization.

28310885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68307.

The product of its (nonzero) digits is 15360, while the sum is 35.

The square root of 28310885 is about 5320.7974026456. The cubic root of 28310885 is about 304.7786084847.

The spelling of 28310885 in words is "twenty-eight million, three hundred ten thousand, eight hundred eighty-five".