28268058 has 64 divisors (see below), whose sum is σ = 72640512. Its totient is φ = 7128000.

The previous prime is 28268047. The next prime is 28268087. The reversal of 28268058 is 85086282.

It is a super-3 number, since 3×28268058³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11433 + ... + 13683.

It is an arithmetic number, because the mean of its divisors is an integer number (1135008).

Almost surely, 2^28268058 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28268058, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36320256).

28268058 is an abundant number, since it is smaller than the sum of its proper divisors (44372454).

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

28268058 is a wasteful number, since it uses less digits than its factorization.

28268058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2299.

The product of its (nonzero) digits is 61440, while the sum is 39.

The square root of 28268058 is about 5316.7713887283. The cubic root of 28268058 is about 304.6248473570.

The spelling of 28268058 in words is "twenty-eight million, two hundred sixty-eight thousand, fifty-eight".