13540020 has 48 divisors (see below), whose sum is σ = 40830720. Its totient is φ = 3332736.

The previous prime is 13540001. The next prime is 13540073. The reversal of 13540020 is 2004531.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

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, 7900 + ... + 9459.

It is an arithmetic number, because the mean of its divisors is an integer number (850640).

Almost surely, 2^13540020 is an apocalyptic number.

13540020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13540020 is an abundant number, since it is smaller than the sum of its proper divisors (27290700).

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

13540020 is a wasteful number, since it uses less digits than its factorization.

13540020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17384 (or 17382 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 13540020 is about 3679.6766162259. The cubic root of 13540020 is about 238.3452137894.

Adding to 13540020 its reverse (2004531), we get a palindrome (15544551).

The spelling of 13540020 in words is "thirteen million, five hundred forty thousand, twenty".