28543548 has 72 divisors (see below), whose sum is σ = 76809600. Its totient is φ = 8180640.

The previous prime is 28543517. The next prime is 28543549. The reversal of 28543548 is 84534582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28543549) 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 23 ways as a sum of consecutive naturals, for example, 47353 + ... + 47951.

It is an arithmetic number, because the mean of its divisors is an integer number (1066800).

Almost surely, 2^28543548 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28543548, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38404800).

28543548 is an abundant number, since it is smaller than the sum of its proper divisors (48266052).

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

28543548 is a wasteful number, since it uses less digits than its factorization.

28543548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655 (or 634 counting only the distinct ones).

The product of its digits is 153600, while the sum is 39.

The square root of 28543548 is about 5342.6162130552. The cubic root of 28543548 is about 305.6112368290.

The spelling of 28543548 in words is "twenty-eight million, five hundred forty-three thousand, five hundred forty-eight".