13040745 has 16 divisors (see below), whose sum is σ = 21963840. Its totient is φ = 6588864.

The previous prime is 13040743. The next prime is 13040771. The reversal of 13040745 is 54704031.

It is not a de Polignac number, because 13040745 - 2¹ = 13040743 is a prime.

It is a super-2 number, since 2×13040745² = 340122060310050, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13040743) 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, 22594 + ... + 23163.

It is an arithmetic number, because the mean of its divisors is an integer number (1372740).

Almost surely, 2^13040745 is an apocalyptic number.

13040745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13040745 is a deficient number, since it is larger than the sum of its proper divisors (8923095).

13040745 is a wasteful number, since it uses less digits than its factorization.

13040745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45784.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 13040745 is about 3611.1971699147. The cubic root of 13040745 is about 235.3788667566.

Adding to 13040745 its reverse (54704031), we get a palindrome (67744776).

The spelling of 13040745 in words is "thirteen million, forty thousand, seven hundred forty-five".