28883760 has 40 divisors (see below), whose sum is σ = 89540400. Its totient is φ = 7702272.

The previous prime is 28883759. The next prime is 28883773. The reversal of 28883760 is 6738882.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 59935 + ... + 60414.

It is an arithmetic number, because the mean of its divisors is an integer number (2238510).

Almost surely, 2^28883760 is an apocalyptic number.

28883760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28883760 is an abundant number, since it is smaller than the sum of its proper divisors (60656640).

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

28883760 is a wasteful number, since it uses less digits than its factorization.

28883760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120365 (or 120359 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 28883760 is about 5374.3613574080. The cubic root of 28883760 is about 306.8206431128.

Subtracting from 28883760 its product of nonzero digits (129024), we obtain a triangular number (28754736 = T₇₅₈₃).

It can be divided in two parts, 288 and 83760, that added together give a palindrome (84048).

The spelling of 28883760 in words is "twenty-eight million, eight hundred eighty-three thousand, seven hundred sixty".