13540000 has 60 divisors (see below), whose sum is σ = 33359634. Its totient is φ = 5408000.

The previous prime is 13539997. The next prime is 13540001. The reversal of 13540000 is 4531.

It can be written as a sum of positive squares in 5 ways, for example, as 2702736 + 10837264 = 1644^2 + 3292^2 .

It is not an unprimeable number, because it can be changed into a prime (13540001) 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 9 ways as a sum of consecutive naturals, for example, 19662 + ... + 20338.

Almost surely, 2^13540000 is an apocalyptic number.

13540000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13540000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16679817).

13540000 is an abundant number, since it is smaller than the sum of its proper divisors (19819634).

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

13540000 is an frugal number, since it uses more digits than its factorization.

13540000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707 (or 684 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 13540000 is about 3679.6738985948. The cubic root of 13540000 is about 238.3450964358.

Adding to 13540000 its reverse (4531), we get a palindrome (13544531).

The spelling of 13540000 in words is "thirteen million, five hundred forty thousand".