13506235420 has 48 divisors (see below), whose sum is σ = 28746351648. Its totient is φ = 5329981440.

The previous prime is 13506235411. The next prime is 13506235423. The reversal of 13506235420 is 2453260531.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13506235423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 431500 + ... + 461740.

It is an arithmetic number, because the mean of its divisors is an integer number (598882326).

Almost surely, 2^13506235420 is an apocalyptic number.

13506235420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13506235420 is an abundant number, since it is smaller than the sum of its proper divisors (15240116228).

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

13506235420 is a wasteful number, since it uses less digits than its factorization.

13506235420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30550 (or 30548 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 13506235420 its reverse (2453260531), we get a palindrome (15959495951).

The spelling of 13506235420 in words is "thirteen billion, five hundred six million, two hundred thirty-five thousand, four hundred twenty".