28148526 has 64 divisors (see below), whose sum is σ = 72230400. Its totient is φ = 7959168.

The previous prime is 28148521. The next prime is 28148551. The reversal of 28148526 is 62584182.

It is a Curzon number.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 42385 + ... + 43043.

It is an arithmetic number, because the mean of its divisors is an integer number (1128600).

Almost surely, 2^28148526 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28148526, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36115200).

28148526 is an abundant number, since it is smaller than the sum of its proper divisors (44081874).

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

28148526 is a wasteful number, since it uses less digits than its factorization.

28148526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790 (or 784 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 28148526 is about 5305.5184478051. The cubic root of 28148526 is about 304.1948701522.

The spelling of 28148526 in words is "twenty-eight million, one hundred forty-eight thousand, five hundred twenty-six".