28148523 has 16 divisors (see below), whose sum is σ = 40567296. Its totient is φ = 17258400.

The previous prime is 28148521. The next prime is 28148551. The reversal of 28148523 is 32584182.

It is not a de Polignac number, because 28148523 - 2¹ = 28148521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28148521) 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 15 ways as a sum of consecutive naturals, for example, 10798 + ... + 13148.

It is an arithmetic number, because the mean of its divisors is an integer number (2535456).

Almost surely, 2^28148523 is an apocalyptic number.

28148523 is a deficient number, since it is larger than the sum of its proper divisors (12418773).

28148523 is a wasteful number, since it uses less digits than its factorization.

28148523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2674.

The product of its digits is 15360, while the sum is 33.

The square root of 28148523 is about 5305.5181650806. The cubic root of 28148523 is about 304.1948593455.

The spelling of 28148523 in words is "twenty-eight million, one hundred forty-eight thousand, five hundred twenty-three".