13530040 has 16 divisors (see below), whose sum is σ = 30442680. Its totient is φ = 5412000.

The previous prime is 13530019. The next prime is 13530059. The reversal of 13530040 is 4003531.

It is a junction number, because it is equal to n+sod(n) for n = 13529996 and 13530023.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169086 + ... + 169165.

Almost surely, 2^13530040 is an apocalyptic number.

13530040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13530040 is an abundant number, since it is smaller than the sum of its proper divisors (16912640).

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

13530040 is a wasteful number, since it uses less digits than its factorization.

13530040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338262 (or 338258 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 13530040 is about 3678.3202688184. The cubic root of 13530040 is about 238.2866400232.

Adding to 13530040 its reverse (4003531), we get a palindrome (17533571).

The spelling of 13530040 in words is "thirteen million, five hundred thirty thousand, forty".