28320192 has 98 divisors (see below), whose sum is σ = 84397088. Its totient is φ = 9424512.

The previous prime is 28320191. The next prime is 28320197. The reversal of 28320192 is 29102382.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28320191) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 46353 + ... + 46959.

Almost surely, 2^28320192 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 28320192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42198544).

28320192 is an abundant number, since it is smaller than the sum of its proper divisors (56076896).

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

28320192 is an frugal number, since it uses more digits than its factorization.

28320192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637 (or 612 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 28320192 is about 5321.6719177341. The cubic root of 28320192 is about 304.8120027513.

The spelling of 28320192 in words is "twenty-eight million, three hundred twenty thousand, one hundred ninety-two".