13081740 has 48 divisors (see below), whose sum is σ = 41862912. Its totient is φ = 2990016.

The previous prime is 13081729. The next prime is 13081751. The reversal of 13081740 is 4718031.

13081740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13081729) and next prime (13081751).

It is a super-2 number, since 2×13081740² = 342263842855200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13081740.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15154 + ... + 15993.

It is an arithmetic number, because the mean of its divisors is an integer number (872144).

Almost surely, 2^13081740 is an apocalyptic number.

13081740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13081740 is an abundant number, since it is smaller than the sum of its proper divisors (28781172).

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

13081740 is a wasteful number, since it uses less digits than its factorization.

13081740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31166 (or 31164 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 13081740 is about 3616.8688115551. The cubic root of 13081740 is about 235.6252551083.

Adding to 13081740 its reverse (4718031), we get a palindrome (17799771).

The spelling of 13081740 in words is "thirteen million, eighty-one thousand, seven hundred forty".