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13115296 = 251724109
BaseRepresentation
bin110010000001…
…111110100000
3220200022210201
4302001332200
511324142141
61145034544
7216323005
oct62017640
926608721
1013115296
117448797
124485a54
13294283c
141a558ac
151241031
hexc81fa0

13115296 has 24 divisors (see below), whose sum is σ = 27340740. Its totient is φ = 6171648.

The previous prime is 13115293. The next prime is 13115321. The reversal of 13115296 is 69251131.

It can be written as a sum of positive squares in 2 ways, for example, as 12531600 + 583696 = 3540^2 + 764^2 .

It is not an unprimeable number, because it can be changed into a prime (13115293) 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, 11511 + ... + 12598.

Almost surely, 213115296 is an apocalyptic number.

13115296 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13115296 is an abundant number, since it is smaller than the sum of its proper divisors (14225444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13115296 is a wasteful number, since it uses less digits than its factorization.

13115296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24136 (or 24128 counting only the distinct ones).

The product of its digits is 1620, while the sum is 28.

The square root of 13115296 is about 3621.5046596684. The cubic root of 13115296 is about 235.8265507115.

The spelling of 13115296 in words is "thirteen million, one hundred fifteen thousand, two hundred ninety-six".

Divisors: 1 2 4 8 16 17 32 34 68 136 272 544 24109 48218 96436 192872 385744 409853 771488 819706 1639412 3278824 6557648 13115296