28895515 has 8 divisors (see below), whose sum is σ = 37826928. Its totient is φ = 21014880.

The previous prime is 28895507. The next prime is 28895519. The reversal of 28895515 is 51559882.

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

It is not a de Polignac number, because 28895515 - 2³ = 28895507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28895519) 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, 262632 + ... + 262741.

It is an arithmetic number, because the mean of its divisors is an integer number (4728366).

Almost surely, 2^28895515 is an apocalyptic number.

28895515 is a deficient number, since it is larger than the sum of its proper divisors (8931413).

28895515 is a wasteful number, since it uses less digits than its factorization.

28895515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525389.

The product of its digits is 144000, while the sum is 43.

The square root of 28895515 is about 5375.4548644743. The cubic root of 28895515 is about 306.8622603572.

The spelling of 28895515 in words is "twenty-eight million, eight hundred ninety-five thousand, five hundred fifteen".