13453540 has 24 divisors (see below), whose sum is σ = 28324800. Its totient is φ = 5367648.

The previous prime is 13453523. The next prime is 13453541. The reversal of 13453540 is 4535431.

It is not an unprimeable number, because it can be changed into a prime (13453541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11419 + ... + 12541.

It is an arithmetic number, because the mean of its divisors is an integer number (1180200).

Almost surely, 2^13453540 is an apocalyptic number.

13453540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13453540 is the 2995-th pentagonal number.

It is an amenable number.

13453540 is an abundant number, since it is smaller than the sum of its proper divisors (14871260).

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

13453540 is a wasteful number, since it uses less digits than its factorization.

13453540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1731 (or 1729 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 13453540 is about 3667.9067599927. The cubic root of 13453540 is about 237.8366932810.

Adding to 13453540 its reverse (4535431), we get a palindrome (17988971).

The spelling of 13453540 in words is "thirteen million, four hundred fifty-three thousand, five hundred forty".