28715995 has 16 divisors (see below), whose sum is σ = 42962688. Its totient is φ = 17900640.

The previous prime is 28715971. The next prime is 28716001. The reversal of 28715995 is 59951782.

It is not a de Polignac number, because 28715995 - 2⁵ = 28715963 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36909 + ... + 37678.

It is an arithmetic number, because the mean of its divisors is an integer number (2685168).

Almost surely, 2^28715995 is an apocalyptic number.

28715995 is a deficient number, since it is larger than the sum of its proper divisors (14246693).

28715995 is a wasteful number, since it uses less digits than its factorization.

28715995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74610.

The product of its digits is 226800, while the sum is 46.

The square root of 28715995 is about 5358.7307265807. The cubic root of 28715995 is about 306.2254557589.

The spelling of 28715995 in words is "twenty-eight million, seven hundred fifteen thousand, nine hundred ninety-five".