28943088 has 80 divisors (see below), whose sum is σ = 78852096. Its totient is φ = 9135360.

The previous prime is 28943087. The next prime is 28943147. The reversal of 28943088 is 88034982.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28943087) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 78681 + ... + 79047.

Almost surely, 2^28943088 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 28943088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39426048).

28943088 is an abundant number, since it is smaller than the sum of its proper divisors (49909008).

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

28943088 is a wasteful number, since it uses less digits than its factorization.

28943088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462 (or 456 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 42.

The square root of 28943088 is about 5379.8780655327. The cubic root of 28943088 is about 307.0305719925.

The spelling of 28943088 in words is "twenty-eight million, nine hundred forty-three thousand, eighty-eight".