28234584 has 144 divisors (see below), whose sum is σ = 91231920. Its totient is φ = 7862400.

The previous prime is 28234573. The next prime is 28234601. The reversal of 28234584 is 48543282.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 186909 + ... + 187059.

It is an arithmetic number, because the mean of its divisors is an integer number (633555).

Almost surely, 2^28234584 is an apocalyptic number.

28234584 is a gapful number since it is divisible by the number (24) 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 28234584, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45615960).

28234584 is an abundant number, since it is smaller than the sum of its proper divisors (62997336).

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

28234584 is a wasteful number, since it uses less digits than its factorization.

28234584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230 (or 216 counting only the distinct ones).

The product of its digits is 61440, while the sum is 36.

The square root of 28234584 is about 5313.6224931773. The cubic root of 28234584 is about 304.5045579976.

The spelling of 28234584 in words is "twenty-eight million, two hundred thirty-four thousand, five hundred eighty-four".