28523106 has 36 divisors (see below), whose sum is σ = 62913942. Its totient is φ = 9339264.

The previous prime is 28523101. The next prime is 28523111. The reversal of 28523106 is 60132582.

It is an interprime number because it is at equal distance from previous prime (28523101) and next prime (28523111).

It can be written as a sum of positive squares in only one way, i.e., 25250625 + 3272481 = 5025^2 + 1809^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28523106.

It is not an unprimeable number, because it can be changed into a prime (28523101) 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 17 ways as a sum of consecutive naturals, for example, 80626 + ... + 80978.

Almost surely, 2^28523106 is an apocalyptic number.

28523106 is an abundant number, since it is smaller than the sum of its proper divisors (34390836).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28523106 is a wasteful number, since it uses less digits than its factorization.

28523106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495 (or 425 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 28523106 is about 5340.7027627457. The cubic root of 28523106 is about 305.5382629895.

Adding to 28523106 its reverse (60132582), we get a palindrome (88655688).

The spelling of 28523106 in words is "twenty-eight million, five hundred twenty-three thousand, one hundred six".