28345248 has 96 divisors (see below), whose sum is σ = 84369600. Its totient is φ = 9255168.

The previous prime is 28345241. The next prime is 28345327. The reversal of 28345248 is 84254382.

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

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (28345241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45483 + ... + 46101.

It is an arithmetic number, because the mean of its divisors is an integer number (878850).

Almost surely, 2^28345248 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 28345248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42184800).

28345248 is an abundant number, since it is smaller than the sum of its proper divisors (56024352).

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

28345248 is a wasteful number, since it uses less digits than its factorization.

28345248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691 (or 677 counting only the distinct ones).

The product of its digits is 61440, while the sum is 36.

The square root of 28345248 is about 5324.0255446419. The cubic root of 28345248 is about 304.9018693535.

The spelling of 28345248 in words is "twenty-eight million, three hundred forty-five thousand, two hundred forty-eight".