13445340 has 48 divisors (see below), whose sum is σ = 39287808. Its totient is φ = 3429184.

The previous prime is 13445321. The next prime is 13445347. The reversal of 13445340 is 4354431.

13445340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 13445340.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13445347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3492 + ... + 6251.

It is an arithmetic number, because the mean of its divisors is an integer number (818496).

Almost surely, 2^13445340 is an apocalyptic number.

13445340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13445340 is an abundant number, since it is smaller than the sum of its proper divisors (25842468).

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

13445340 is a wasteful number, since it uses less digits than its factorization.

13445340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9778 (or 9776 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 13445340 is about 3666.7887858452. The cubic root of 13445340 is about 237.7883625752.

Adding to 13445340 its reverse (4354431), we get a palindrome (17799771).

Subtracting from 13445340 its reverse (4354431), we obtain a palindrome (9090909).

The spelling of 13445340 in words is "thirteen million, four hundred forty-five thousand, three hundred forty".