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13070471 = 79165449
BaseRepresentation
bin110001110111…
…000010000111
3220121001022112
4301313002013
511321223341
61144051235
7216045221
oct61670207
926531275
1013070471
117418047
124463b1b
13292830b
141a43411
151232aeb
hexc77087

13070471 has 4 divisors (see below), whose sum is σ = 13236000. Its totient is φ = 12904944.

The previous prime is 13070419. The next prime is 13070479. The reversal of 13070471 is 17407031.

13070471 is digitally balanced in base 2, 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: 17407031 = 171023943.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13070471 is a prime.

It is a super-3 number, since 3×130704713 (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13070479) 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, 82646 + ... + 82803.

It is an arithmetic number, because the mean of its divisors is an integer number (3309000).

Almost surely, 213070471 is an apocalyptic number.

13070471 is a deficient number, since it is larger than the sum of its proper divisors (165529).

13070471 is an equidigital number, since it uses as much as digits as its factorization.

13070471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165528.

The product of its (nonzero) digits is 588, while the sum is 23.

The square root of 13070471 is about 3615.3106367227. The cubic root of 13070471 is about 235.5575774700.

The spelling of 13070471 in words is "thirteen million, seventy thousand, four hundred seventy-one".

Divisors: 1 79 165449 13070471