28526117 has 4 divisors (see below), whose sum is σ = 28627200. Its totient is φ = 28425036.

The previous prime is 28526089. The next prime is 28526123. The reversal of 28526117 is 71162582.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71162582 = 2 ⋅35581291.

It is a cyclic number.

It is not a de Polignac number, because 28526117 - 2¹⁰ = 28525093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28526917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50117 + ... + 50682.

It is an arithmetic number, because the mean of its divisors is an integer number (7156800).

Almost surely, 2^28526117 is an apocalyptic number.

It is an amenable number.

28526117 is a deficient number, since it is larger than the sum of its proper divisors (101083).

28526117 is a wasteful number, since it uses less digits than its factorization.

28526117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101082.

The product of its digits is 6720, while the sum is 32.

The square root of 28526117 is about 5340.9846470478. The cubic root of 28526117 is about 305.5490138446.

Adding to 28526117 its reverse (71162582), we get a palindrome (99688699).

The spelling of 28526117 in words is "twenty-eight million, five hundred twenty-six thousand, one hundred seventeen".