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13130548 = 2213812377
BaseRepresentation
bin110010000101…
…101100110100
3220201002201121
4302011230310
511330134143
61145233324
7216415324
oct62055464
926632647
1013130548
1174591a2
124492844
132949772
141a5b284
1512457ed
hexc85b34

13130548 has 12 divisors (see below), whose sum is σ = 23004772. Its totient is φ = 6557760.

The previous prime is 13130521. The next prime is 13130549. The reversal of 13130548 is 84503131.

It can be written as a sum of positive squares in 2 ways, for example, as 5579044 + 7551504 = 2362^2 + 2748^2 .

It is a super-2 number, since 2×131305482 = 344822581560608, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13130549) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4336 + ... + 6712.

Almost surely, 213130548 is an apocalyptic number.

It is an amenable number.

13130548 is a deficient number, since it is larger than the sum of its proper divisors (9874224).

13130548 is a wasteful number, since it uses less digits than its factorization.

13130548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3762 (or 3760 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 13130548 is about 3623.6098023932. The cubic root of 13130548 is about 235.9179308624.

Adding to 13130548 its reverse (84503131), we get a palindrome (97633679).

The spelling of 13130548 in words is "thirteen million, one hundred thirty thousand, five hundred forty-eight".

Divisors: 1 2 4 1381 2377 2762 4754 5524 9508 3282637 6565274 13130548