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13000079 = 37934301
BaseRepresentation
bin110001100101…
…110110001111
3220110110202102
4301211312033
511312000304
61142345315
7215333051
oct61456617
926413672
1013000079
11737a174
12442b23b
132902271
141a258d1
15121bd1e
hexc65d8f

13000079 has 4 divisors (see below), whose sum is σ = 13034760. Its totient is φ = 12965400.

The previous prime is 13000069. The next prime is 13000081. The reversal of 13000079 is 97000031.

13000079 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97000031 = 109788423.

It is a cyclic number.

It is not a de Polignac number, because 13000079 - 216 = 12934543 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 13000079.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13000049) 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, 16772 + ... + 17529.

It is an arithmetic number, because the mean of its divisors is an integer number (3258690).

Almost surely, 213000079 is an apocalyptic number.

13000079 is a deficient number, since it is larger than the sum of its proper divisors (34681).

13000079 is an equidigital number, since it uses as much as digits as its factorization.

13000079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34680.

The product of its (nonzero) digits is 189, while the sum is 20.

The square root of 13000079 is about 3605.5622307762. The cubic root of 13000079 is about 235.1339450671.

The spelling of 13000079 in words is "thirteen million, seventy-nine", and thus it is an aban number and an uban number.

Divisors: 1 379 34301 13000079