13228704 has 96 divisors (see below), whose sum is σ = 39372480. Its totient is φ = 4320000.

The previous prime is 13228687. The next prime is 13228717. The reversal of 13228704 is 40782231.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52579 + ... + 52829.

It is an arithmetic number, because the mean of its divisors is an integer number (410130).

Almost surely, 2^13228704 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 13228704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19686240).

13228704 is an abundant number, since it is smaller than the sum of its proper divisors (26143776).

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

13228704 is a wasteful number, since it uses less digits than its factorization.

13228704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331 (or 317 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 13228704 is about 3637.1285377341. The cubic root of 13228704 is about 236.5043317984.

The spelling of 13228704 in words is "thirteen million, two hundred twenty-eight thousand, seven hundred four".