13485867828 has 12 divisors (see below), whose sum is σ = 31467024960. Its totient is φ = 4495289272.

The previous prime is 13485867821. The next prime is 13485867841. The reversal of 13485867828 is 82876858431.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13485867821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 561911148 + ... + 561911171.

It is an arithmetic number, because the mean of its divisors is an integer number (2622252080).

Almost surely, 2^13485867828 is an apocalyptic number.

It is an amenable number.

13485867828 is an abundant number, since it is smaller than the sum of its proper divisors (17981157132).

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

13485867828 is a wasteful number, since it uses less digits than its factorization.

13485867828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123822326 (or 1123822324 counting only the distinct ones).

The product of its digits is 20643840, while the sum is 60.

The spelling of 13485867828 in words is "thirteen billion, four hundred eighty-five million, eight hundred sixty-seven thousand, eight hundred twenty-eight".