28804352 has 36 divisors (see below), whose sum is σ = 59069556. Its totient is φ = 14008320.

The previous prime is 28804333. The next prime is 28804357. The reversal of 28804352 is 25340882.

It can be written as a sum of positive squares in 2 ways, for example, as 27206656 + 1597696 = 5216^2 + 1264^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28804357) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7952 + ... + 10992.

It is an arithmetic number, because the mean of its divisors is an integer number (1640821).

Almost surely, 2^28804352 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 28804352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29534778).

28804352 is an abundant number, since it is smaller than the sum of its proper divisors (30265204).

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

28804352 is an equidigital number, since it uses as much as digits as its factorization.

28804352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3094 (or 3080 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 28804352 is about 5366.9686043427. The cubic root of 28804352 is about 306.5392118958.

The spelling of 28804352 in words is "twenty-eight million, eight hundred four thousand, three hundred fifty-two".