13028885 has 8 divisors (see below), whose sum is σ = 16554456. Its totient is φ = 9809920.

The previous prime is 13028881. The next prime is 13028893. The reversal of 13028885 is 58882031.

13028885 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 6848689 + 6180196 = 2617^2 + 2486^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13028885 - 2² = 13028881 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13028881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76556 + ... + 76725.

It is an arithmetic number, because the mean of its divisors is an integer number (2069307).

Almost surely, 2^13028885 is an apocalyptic number.

It is an amenable number.

13028885 is a deficient number, since it is larger than the sum of its proper divisors (3525571).

13028885 is a wasteful number, since it uses less digits than its factorization.

13028885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153303.

The product of its (nonzero) digits is 15360, while the sum is 35.

The square root of 13028885 is about 3609.5546816747. The cubic root of 13028885 is about 235.3074894423.

The spelling of 13028885 in words is "thirteen million, twenty-eight thousand, eight hundred eighty-five".