28459008 has 90 divisors (see below), whose sum is σ = 82638374. Its totient is φ = 9437184.

The previous prime is 28458973. The next prime is 28459009. The reversal of 28459008 is 80095482.

It can be written as a sum of positive squares in only one way, i.e., 21233664 + 7225344 = 4608^2 + 2688^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (28459009) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 147360 + ... + 147552.

Almost surely, 2^28459008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28459008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41319187).

28459008 is an abundant number, since it is smaller than the sum of its proper divisors (54179366).

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

28459008 is an equidigital number, since it uses as much as digits as its factorization.

28459008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227 (or 198 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 28459008 is about 5334.6984919487. The cubic root of 28459008 is about 305.3092196759.

The spelling of 28459008 in words is "twenty-eight million, four hundred fifty-nine thousand, eight".