28883568 has 160 divisors (see below), whose sum is σ = 91422720. Its totient is φ = 7683840.

The previous prime is 28883563. The next prime is 28883587. The reversal of 28883568 is 86538882.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28883563) 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 31 ways as a sum of consecutive naturals, for example, 489523 + ... + 489581.

It is an arithmetic number, because the mean of its divisors is an integer number (571392).

Almost surely, 2^28883568 is an apocalyptic number.

28883568 is a gapful number since it is divisible by the number (28) 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 28883568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45711360).

28883568 is an abundant number, since it is smaller than the sum of its proper divisors (62539152).

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

28883568 is a wasteful number, since it uses less digits than its factorization.

28883568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155 (or 149 counting only the distinct ones).

The product of its digits is 737280, while the sum is 48.

The square root of 28883568 is about 5374.3434947908. The cubic root of 28883568 is about 306.8199632649.

The spelling of 28883568 in words is "twenty-eight million, eight hundred eighty-three thousand, five hundred sixty-eight".