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13115079 = 328397181
BaseRepresentation
bin110010000001…
…111011000111
3220200022111200
4302001323013
511324140304
61145033543
7216322245
oct62017307
926608450
1013115079
11744860a
1244858b3
132942703
141a55795
151240e39
hexc81ec7

13115079 has 24 divisors (see below), whose sum is σ = 19476912. Its totient is φ = 8501760.

The previous prime is 13115023. The next prime is 13115087. The reversal of 13115079 is 97051131.

It is a happy number.

13115079 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13115079 - 28 = 13114823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13115099) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72369 + ... + 72549.

It is an arithmetic number, because the mean of its divisors is an integer number (811538).

Almost surely, 213115079 is an apocalyptic number.

13115079 is a deficient number, since it is larger than the sum of its proper divisors (6361833).

13115079 is a wasteful number, since it uses less digits than its factorization.

13115079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367 (or 364 counting only the distinct ones).

The product of its (nonzero) digits is 945, while the sum is 27.

The square root of 13115079 is about 3621.4746996217. The cubic root of 13115079 is about 235.8252500764.

The spelling of 13115079 in words is "thirteen million, one hundred fifteen thousand, seventy-nine".

Divisors: 1 3 9 83 97 181 249 291 543 747 873 1629 8051 15023 17557 24153 45069 52671 72459 135207 158013 1457231 4371693 13115079