28744608 has 96 divisors (see below), whose sum is σ = 79168320. Its totient is φ = 9123840.

The previous prime is 28744571. The next prime is 28744619. The reversal of 28744608 is 80644782.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

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, 263658 + ... + 263766.

It is an arithmetic number, because the mean of its divisors is an integer number (824670).

Almost surely, 2^28744608 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 28744608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39584160).

28744608 is an abundant number, since it is smaller than the sum of its proper divisors (50423712).

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

28744608 is a wasteful number, since it uses less digits than its factorization.

28744608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 39.

The square root of 28744608 is about 5361.3998172119. The cubic root of 28744608 is about 306.3271310375.

The spelling of 28744608 in words is "twenty-eight million, seven hundred forty-four thousand, six hundred eight".