28788192 has 72 divisors (see below), whose sum is σ = 86191560. Its totient is φ = 9089280.

The previous prime is 28788187. The next prime is 28788223. The reversal of 28788192 is 29188782.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 2842 + ... + 8102.

It is an arithmetic number, because the mean of its divisors is an integer number (1197105).

Almost surely, 2^28788192 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 28788192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43095780).

28788192 is an abundant number, since it is smaller than the sum of its proper divisors (57403368).

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

28788192 is a wasteful number, since it uses less digits than its factorization.

28788192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5296 (or 5285 counting only the distinct ones).

The product of its digits is 129024, while the sum is 45.

The square root of 28788192 is about 5365.4628877665. The cubic root of 28788192 is about 306.4818756486.

The spelling of 28788192 in words is "twenty-eight million, seven hundred eighty-eight thousand, one hundred ninety-two".