13140673 has 20 divisors (see below), whose sum is σ = 16548308. Its totient is φ = 10372320.

The previous prime is 13140649. The next prime is 13140689. The reversal of 13140673 is 37604131.

It can be written as a sum of positive squares in 2 ways, for example, as 693889 + 12446784 = 833^2 + 3528^2 .

It is a de Polignac number, because none of the positive numbers 2^k-13140673 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13140173) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 31003 + ... + 31423.

Almost surely, 2^13140673 is an apocalyptic number.

13140673 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13140673 is a deficient number, since it is larger than the sum of its proper divisors (3407635).

13140673 is an frugal number, since it uses more digits than its factorization.

13140673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462 (or 441 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 13140673 is about 3625.0066206836. The cubic root of 13140673 is about 235.9785542611.

It can be divided in two parts, 131 and 40673, that added together give a palindrome (40804).

The spelling of 13140673 in words is "thirteen million, one hundred forty thousand, six hundred seventy-three".