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13012648 = 2311295099
BaseRepresentation
bin110001101000…
…111010101000
3220111002222221
4301220322220
511312401043
61142523424
7215414515
oct61507250
926432887
1013012648
117388660
124436574
132907bbc
141a2a30c
1512208ed
hexc68ea8

13012648 has 32 divisors (see below), whose sum is σ = 27540000. Its totient is φ = 5709760.

The previous prime is 13012609. The next prime is 13012669. The reversal of 13012648 is 84621031.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3 + ... + 5101.

It is an arithmetic number, because the mean of its divisors is an integer number (860625).

Almost surely, 213012648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13012648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13770000).

13012648 is an abundant number, since it is smaller than the sum of its proper divisors (14527352).

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

13012648 is a wasteful number, since it uses less digits than its factorization.

13012648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5145 (or 5141 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 13012648 is about 3607.3048110743. The cubic root of 13012648 is about 235.2096996478.

Adding to 13012648 its reverse (84621031), we get a palindrome (97633679).

The spelling of 13012648 in words is "thirteen million, twelve thousand, six hundred forty-eight".

Divisors: 1 2 4 8 11 22 29 44 58 88 116 232 319 638 1276 2552 5099 10198 20396 40792 56089 112178 147871 224356 295742 448712 591484 1182968 1626581 3253162 6506324 13012648