13072783 has 4 divisors (see below), whose sum is σ = 13089528. Its totient is φ = 13056040.

The previous prime is 13072771. The next prime is 13072789. The reversal of 13072783 is 38727031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38727031 = 7 ⋅5532433.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13072783 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13072789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7141 + ... + 8782.

It is an arithmetic number, because the mean of its divisors is an integer number (3272382).

Almost surely, 2^13072783 is an apocalyptic number.

13072783 is a deficient number, since it is larger than the sum of its proper divisors (16745).

13072783 is an equidigital number, since it uses as much as digits as its factorization.

13072783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16744.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 13072783 is about 3615.6303738076. The cubic root of 13072783 is about 235.5714656972.

The spelling of 13072783 in words is "thirteen million, seventy-two thousand, seven hundred eighty-three".