28873248 has 48 divisors (see below), whose sum is σ = 76940640. Its totient is φ = 9480768.

The previous prime is 28873223. The next prime is 28873249. The reversal of 28873248 is 84237882.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (28873249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 430911 + ... + 430977.

It is an arithmetic number, because the mean of its divisors is an integer number (1602930).

Almost surely, 2^28873248 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 28873248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38470320).

28873248 is an abundant number, since it is smaller than the sum of its proper divisors (48067392).

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

28873248 is an frugal number, since it uses more digits than its factorization.

28873248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214 (or 72 counting only the distinct ones).

The product of its digits is 172032, while the sum is 42.

The square root of 28873248 is about 5373.3832917446. The cubic root of 28873248 is about 306.7834170043.

It can be divided in two parts, 288 and 73248, that added together give a triangular number (73536 = T₃₈₃).

The spelling of 28873248 in words is "twenty-eight million, eight hundred seventy-three thousand, two hundred forty-eight".