13286028421 has 4 divisors (see below), whose sum is σ = 13407918700. Its totient is φ = 13164138144.

The previous prime is 13286028409. The next prime is 13286028433. The reversal of 13286028421 is 12482068231.

It is a happy number.

13286028421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12482068231 = 389 ⋅32087579.

It is an interprime number because it is at equal distance from previous prime (13286028409) and next prime (13286028433).

It can be written as a sum of positive squares in 2 ways, for example, as 11190677796 + 2095350625 = 105786^2 + 45775^2 .

It is a cyclic number.

It is not a de Polignac number, because 13286028421 - 2⁵ = 13286028389 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 (13286028461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60944976 + ... + 60945193.

It is an arithmetic number, because the mean of its divisors is an integer number (3351979675).

Almost surely, 2^13286028421 is an apocalyptic number.

It is an amenable number.

13286028421 is a deficient number, since it is larger than the sum of its proper divisors (121890279).

13286028421 is a wasteful number, since it uses less digits than its factorization.

13286028421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121890278.

The product of its (nonzero) digits is 36864, while the sum is 37.

The spelling of 13286028421 in words is "thirteen billion, two hundred eighty-six million, twenty-eight thousand, four hundred twenty-one".