28885115 has 16 divisors (see below), whose sum is σ = 40582080. Its totient is φ = 19322880.

The previous prime is 28885099. The next prime is 28885117. The reversal of 28885115 is 51158882.

It is not a de Polignac number, because 28885115 - 2⁴ = 28885099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28885117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8630 + ... + 11499.

It is an arithmetic number, because the mean of its divisors is an integer number (2536380).

Almost surely, 2^28885115 is an apocalyptic number.

28885115 is a deficient number, since it is larger than the sum of its proper divisors (11696965).

28885115 is a wasteful number, since it uses less digits than its factorization.

28885115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20182.

The product of its digits is 25600, while the sum is 38.

The square root of 28885115 is about 5374.4874174195. The cubic root of 28885115 is about 306.8254409123.

The spelling of 28885115 in words is "twenty-eight million, eight hundred eighty-five thousand, one hundred fifteen".