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13438841 = 133133347
BaseRepresentation
bin110011010000…
…111101111001
3221021202121212
4303100331321
511420020331
61200012505
7222141203
oct63207571
927252555
1013438841
117649889
124601135
132a26ba0
141adb773
1512a6d2b
hexcd0f79

13438841 has 8 divisors (see below), whose sum is σ = 14939904. Its totient is φ = 12004560.

The previous prime is 13438811. The next prime is 13438853. The reversal of 13438841 is 14883431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13438841 - 222 = 9244537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13438798 and 13438807.

It is not an unprimeable number, because it can be changed into a prime (13438811) 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, 16271 + ... + 17076.

It is an arithmetic number, because the mean of its divisors is an integer number (1867488).

Almost surely, 213438841 is an apocalyptic number.

It is an amenable number.

13438841 is a deficient number, since it is larger than the sum of its proper divisors (1501063).

13438841 is a wasteful number, since it uses less digits than its factorization.

13438841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33391.

The product of its digits is 9216, while the sum is 32.

The square root of 13438841 is about 3665.9024809725. The cubic root of 13438841 is about 237.7500435832.

The spelling of 13438841 in words is "thirteen million, four hundred thirty-eight thousand, eight hundred forty-one".

Divisors: 1 13 31 403 33347 433511 1033757 13438841