28160586 has 48 divisors (see below), whose sum is σ = 63697920. Its totient is φ = 8981280.

The previous prime is 28160521. The next prime is 28160611. The reversal of 28160586 is 68506182.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 28160586.

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 23 ways as a sum of consecutive naturals, for example, 60591 + ... + 61053.

It is an arithmetic number, because the mean of its divisors is an integer number (1327040).

Almost surely, 2^28160586 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28160586, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31848960).

28160586 is an abundant number, since it is smaller than the sum of its proper divisors (35537334).

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

28160586 is a wasteful number, since it uses less digits than its factorization.

28160586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611 (or 608 counting only the distinct ones).

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

The square root of 28160586 is about 5306.6548785464. The cubic root of 28160586 is about 304.2383071968.

The spelling of 28160586 in words is "twenty-eight million, one hundred sixty thousand, five hundred eighty-six".