28113008 has 80 divisors (see below), whose sum is σ = 71543040. Its totient is φ = 10368000.

The previous prime is 28112879. The next prime is 28113011. The reversal of 28113008 is 80031182.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 22808 + ... + 24008.

It is an arithmetic number, because the mean of its divisors is an integer number (894288).

Almost surely, 2^28113008 is an apocalyptic number.

28113008 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 28113008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35771520).

28113008 is an abundant number, since it is smaller than the sum of its proper divisors (43430032).

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

28113008 is a wasteful number, since it uses less digits than its factorization.

28113008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1246 (or 1240 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 28113008 is about 5302.1701217520. The cubic root of 28113008 is about 304.0668712541.

The spelling of 28113008 in words is "twenty-eight million, one hundred thirteen thousand, eight".