28768544 has 24 divisors (see below), whose sum is σ = 64729728. Its totient is φ = 12329280.

The previous prime is 28768543. The next prime is 28768567. The reversal of 28768544 is 44586782.

It is a junction number, because it is equal to n+sod(n) for n = 28768495 and 28768504.

It is not an unprimeable number, because it can be changed into a prime (28768541) 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 3 ways as a sum of consecutive naturals, for example, 63992 + ... + 64439.

It is an arithmetic number, because the mean of its divisors is an integer number (2697072).

Almost surely, 2^28768544 is an apocalyptic number.

It is an amenable number.

28768544 is an abundant number, since it is smaller than the sum of its proper divisors (35961184).

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

28768544 is a wasteful number, since it uses less digits than its factorization.

28768544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128448 (or 128440 counting only the distinct ones).

The product of its digits is 430080, while the sum is 44.

The square root of 28768544 is about 5363.6316055449. The cubic root of 28768544 is about 306.4121349442.

It can be divided in two parts, 287 and 68544, that multiplied together give a triangular number (19672128 = T₆₂₇₂).

The spelling of 28768544 in words is "twenty-eight million, seven hundred sixty-eight thousand, five hundred forty-four".