13087327828 has 12 divisors (see below), whose sum is σ = 22906302580. Its totient is φ = 6542669952.

The previous prime is 13087327811. The next prime is 13087327829. The reversal of 13087327828 is 82872378031.

It can be written as a sum of positive squares in 2 ways, for example, as 4519603984 + 8567723844 = 67228^2 + 92562^2 .

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13087327829) 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, 218463 + ... + 271846.

Almost surely, 2^13087327828 is an apocalyptic number.

It is an amenable number.

13087327828 is a deficient number, since it is larger than the sum of its proper divisors (9818974752).

13087327828 is a wasteful number, since it uses less digits than its factorization.

13087327828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496986 (or 496984 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 49.

The spelling of 13087327828 in words is "thirteen billion, eighty-seven million, three hundred twenty-seven thousand, eight hundred twenty-eight".