13506740 has 24 divisors (see below), whose sum is σ = 30546600. Its totient is φ = 4987008.

The previous prime is 13506737. The next prime is 13506751. The reversal of 13506740 is 4760531.

It can be written as a sum of positive squares in 4 ways, for example, as 8464 + 13498276 = 92^2 + 3674^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25715 + ... + 26234.

It is an arithmetic number, because the mean of its divisors is an integer number (1272775).

Almost surely, 2^13506740 is an apocalyptic number.

13506740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13506740 is an abundant number, since it is smaller than the sum of its proper divisors (17039860).

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

13506740 is a wasteful number, since it uses less digits than its factorization.

13506740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51971 (or 51969 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 13506740 is about 3675.1516975494. The cubic root of 13506740 is about 238.1497774361.

The spelling of 13506740 in words is "thirteen million, five hundred six thousand, seven hundred forty".