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13125056 = 26729297
BaseRepresentation
bin110010000100…
…010111000000
3220200211012012
4302010113000
511330000211
61145152052
7216363320
oct62042700
926624165
1013125056
11745505a
12448b628
132947109
141a59280
151243d8b
hexc845c0

13125056 has 28 divisors (see below), whose sum is σ = 29766768. Its totient is φ = 5624832.

The previous prime is 13125053. The next prime is 13125061. The reversal of 13125056 is 65052131.

It is a tau number, because it is divible by the number of its divisors (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13125053) 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, 14201 + ... + 15096.

Almost surely, 213125056 is an apocalyptic number.

13125056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13125056 is an abundant number, since it is smaller than the sum of its proper divisors (16641712).

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

13125056 is an equidigital number, since it uses as much as digits as its factorization.

13125056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29316 (or 29306 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 13125056 is about 3622.8519152734. The cubic root of 13125056 is about 235.8850344958.

Adding to 13125056 its reverse (65052131), we get a palindrome (78177187).

The spelling of 13125056 in words is "thirteen million, one hundred twenty-five thousand, fifty-six".

Divisors: 1 2 4 7 8 14 16 28 32 56 64 112 224 448 29297 58594 117188 205079 234376 410158 468752 820316 937504 1640632 1875008 3281264 6562528 13125056