28834688 has 32 divisors (see below), whose sum is σ = 58678560. Its totient is φ = 14107648.

The previous prime is 28834679. The next prime is 28834717. The reversal of 28834688 is 88643882.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3620 + ... + 8412.

It is an arithmetic number, because the mean of its divisors is an integer number (1833705).

Almost surely, 2^28834688 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 28834688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29339280).

28834688 is an abundant number, since it is smaller than the sum of its proper divisors (29843872).

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

28834688 is an equidigital number, since it uses as much as digits as its factorization.

28834688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4854 (or 4842 counting only the distinct ones).

The product of its digits is 589824, while the sum is 47.

The square root of 28834688 is about 5369.7940370186. The cubic root of 28834688 is about 306.6467872012.

The spelling of 28834688 in words is "twenty-eight million, eight hundred thirty-four thousand, six hundred eighty-eight".