13506902028 has 18 divisors (see below), whose sum is σ = 34142446884. Its totient is φ = 4502300664.

The previous prime is 13506901981. The next prime is 13506902029. The reversal of 13506902028 is 82020960531.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 375191723 = 13506902028 / (1 + 3 + 5 + 0 + 6 + 9 + 0 + 2 + 0 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 13506901983 and 13506902001.

It is not an unprimeable number, because it can be changed into a prime (13506902029) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 187595826 + ... + 187595897.

Almost surely, 2^13506902028 is an apocalyptic number.

13506902028 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

13506902028 is an abundant number, since it is smaller than the sum of its proper divisors (20635544856).

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

13506902028 is a wasteful number, since it uses less digits than its factorization.

13506902028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375191733 (or 375191728 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The spelling of 13506902028 in words is "thirteen billion, five hundred six million, nine hundred two thousand, twenty-eight".