28552704 has 80 divisors (see below), whose sum is σ = 78811920. Its totient is φ = 9175040.

The previous prime is 28552703. The next prime is 28552739. The reversal of 28552704 is 40725582.

It is a super-3 number, since 3×28552704³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28552703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44224 + ... + 44864.

It is an arithmetic number, because the mean of its divisors is an integer number (985149).

Almost surely, 2^28552704 is an apocalyptic number.

28552704 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28552704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39405960).

28552704 is an abundant number, since it is smaller than the sum of its proper divisors (50259216).

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

28552704 is an equidigital number, since it uses as much as digits as its factorization.

28552704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691 (or 675 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 28552704 is about 5343.4730279098. The cubic root of 28552704 is about 305.6439106151.

The spelling of 28552704 in words is "twenty-eight million, five hundred fifty-two thousand, seven hundred four".