28883128 has 8 divisors (see below), whose sum is σ = 54155880. Its totient is φ = 14441560.

The previous prime is 28883123. The next prime is 28883131. The reversal of 28883128 is 82138882.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28883123) 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 as a sum of consecutive naturals, namely, 1805188 + ... + 1805203.

It is an arithmetic number, because the mean of its divisors is an integer number (6769485).

Almost surely, 2^28883128 is an apocalyptic number.

It is an amenable number.

28883128 is a deficient number, since it is larger than the sum of its proper divisors (25272752).

28883128 is a wasteful number, since it uses less digits than its factorization.

28883128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3610397 (or 3610393 counting only the distinct ones).

The product of its digits is 49152, while the sum is 40.

The square root of 28883128 is about 5374.3025594025. The cubic root of 28883128 is about 306.8184052687.

The spelling of 28883128 in words is "twenty-eight million, eight hundred eighty-three thousand, one hundred twenty-eight".