28267008 has 160 divisors (see below), whose sum is σ = 94279680. Its totient is φ = 7311360.

The previous prime is 28267007. The next prime is 28267013. The reversal of 28267008 is 80076282.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a self number, because there is not a number n which added to its sum of digits gives 28267008.

It is not an unprimeable number, because it can be changed into a prime (28267007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118153 + ... + 118391.

It is an arithmetic number, because the mean of its divisors is an integer number (589248).

Almost surely, 2^28267008 is an apocalyptic number.

28267008 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 28267008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47139840).

28267008 is an abundant number, since it is smaller than the sum of its proper divisors (66012672).

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

28267008 is a wasteful number, since it uses less digits than its factorization.

28267008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278 (or 262 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 28267008 is about 5316.6726436748. The cubic root of 28267008 is about 304.6210756081.

The spelling of 28267008 in words is "twenty-eight million, two hundred sixty-seven thousand, eight".