28328058 has 48 divisors (see below), whose sum is σ = 67425696. Its totient is φ = 8524320.

The previous prime is 28327979. The next prime is 28328063. The reversal of 28328058 is 85082382.

It is a super-3 number, since 3×28328058³ (a number of 23 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33841 + ... + 34667.

It is an arithmetic number, because the mean of its divisors is an integer number (1404702).

Almost surely, 2^28328058 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28328058, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33712848).

28328058 is an abundant number, since it is smaller than the sum of its proper divisors (39097638).

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

28328058 is a wasteful number, since it uses less digits than its factorization.

28328058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019 (or 1016 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 28328058 is about 5322.4109198746. The cubic root of 28328058 is about 304.8402208894.

The spelling of 28328058 in words is "twenty-eight million, three hundred twenty-eight thousand, fifty-eight".