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13130446 = 272932341
BaseRepresentation
bin110010000101…
…101011001110
3220201002120211
4302011223032
511330133241
61145233034
7216415120
oct62055316
926632524
1013130446
11745910a
12449277a
1329496c4
141a5b210
151245781
hexc85ace

13130446 has 16 divisors (see below), whose sum is σ = 23286240. Its totient is φ = 5433120.

The previous prime is 13130441. The next prime is 13130461. The reversal of 13130446 is 64403131.

13130446 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×131304462 = 344817224317832, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13130441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15765 + ... + 16576.

It is an arithmetic number, because the mean of its divisors is an integer number (1455390).

Almost surely, 213130446 is an apocalyptic number.

13130446 is a deficient number, since it is larger than the sum of its proper divisors (10155794).

13130446 is a wasteful number, since it uses less digits than its factorization.

13130446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32379.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 13130446 is about 3623.5957280028. The cubic root of 13130446 is about 235.9173199792.

Adding to 13130446 its reverse (64403131), we get a palindrome (77533577).

The spelling of 13130446 in words is "thirteen million, one hundred thirty thousand, four hundred forty-six".

Divisors: 1 2 7 14 29 58 203 406 32341 64682 226387 452774 937889 1875778 6565223 13130446