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13112512 = 26729269
BaseRepresentation
bin110010000001…
…010011000000
3220200011222121
4302001103000
511324100022
61145014024
7216311620
oct62012300
926604877
1013112512
117446696
124484314
1329414aa
141a54880
1512402c7
hexc814c0

13112512 has 28 divisors (see below), whose sum is σ = 29738320. Its totient is φ = 5619456.

The previous prime is 13112501. The next prime is 13112531. The reversal of 13112512 is 21521131.

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

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14187 + ... + 15082.

Almost surely, 213112512 is an apocalyptic number.

It is an amenable number.

13112512 is an abundant number, since it is smaller than the sum of its proper divisors (16625808).

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

13112512 is an equidigital number, since it uses as much as digits as its factorization.

13112512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29288 (or 29278 counting only the distinct ones).

The product of its digits is 60, while the sum is 16.

The square root of 13112512 is about 3621.1202686462. The cubic root of 13112512 is about 235.8098631334.

Adding to 13112512 its reverse (21521131), we get a palindrome (34633643).

The spelling of 13112512 in words is "thirteen million, one hundred twelve thousand, five hundred twelve".

Divisors: 1 2 4 7 8 14 16 28 32 56 64 112 224 448 29269 58538 117076 204883 234152 409766 468304 819532 936608 1639064 1873216 3278128 6556256 13112512