13502749 has 8 divisors (see below), whose sum is σ = 15307040. Its totient is φ = 11807856.

The previous prime is 13502707. The next prime is 13502773. The reversal of 13502749 is 94720531.

13502749 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13502749 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13502749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13502789) by changing a digit.

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, 27087 + ... + 27580.

It is an arithmetic number, because the mean of its divisors is an integer number (1913380).

Almost surely, 2^13502749 is an apocalyptic number.

13502749 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

13502749 is a deficient number, since it is larger than the sum of its proper divisors (1804291).

13502749 is a wasteful number, since it uses less digits than its factorization.

13502749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54699.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 13502749 is about 3674.6086866495. The cubic root of 13502749 is about 238.1263187927.

The spelling of 13502749 in words is "thirteen million, five hundred two thousand, seven hundred forty-nine".