13509412 has 24 divisors (see below), whose sum is σ = 27349056. Its totient is φ = 5719008.

The previous prime is 13509401. The next prime is 13509413. The reversal of 13509412 is 21490531.

It is not an unprimeable number, because it can be changed into a prime (13509413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 583 + ... + 5230.

It is an arithmetic number, because the mean of its divisors is an integer number (1139544).

Almost surely, 2^13509412 is an apocalyptic number.

It is an amenable number.

13509412 is an abundant number, since it is smaller than the sum of its proper divisors (13839644).

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

13509412 is a wasteful number, since it uses less digits than its factorization.

13509412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5907 (or 5905 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 13509412 is about 3675.5152019819. The cubic root of 13509412 is about 238.1654805653.

Adding to 13509412 its reverse (21490531), we get a palindrome (34999943).

The spelling of 13509412 in words is "thirteen million, five hundred nine thousand, four hundred twelve".