28112415 has 20 divisors (see below), whose sum is σ = 46229304. Its totient is φ = 14588064.

The previous prime is 28112401. The next prime is 28112423. The reversal of 28112415 is 51421182.

It is not a de Polignac number, because 28112415 - 2⁸ = 28112159 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 759777 + ... + 759813.

Almost surely, 2^28112415 is an apocalyptic number.

28112415 is a deficient number, since it is larger than the sum of its proper divisors (18116889).

28112415 is an frugal number, since it uses more digits than its factorization.

28112415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156 (or 45 counting only the distinct ones).

The product of its digits is 640, while the sum is 24.

The square root of 28112415 is about 5302.1142009580. The cubic root of 28112415 is about 304.0647333005.

Adding to 28112415 its reverse (51421182), we get a palindrome (79533597).

The spelling of 28112415 in words is "twenty-eight million, one hundred twelve thousand, four hundred fifteen".