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13968841 = 105113291
BaseRepresentation
bin110101010010…
…010111001001
3222021200122111
4311102113021
512034000331
61215222321
7226506325
oct65222711
928250574
1013968841
117980aa7
1248179a1
132b811b3
141bd8985
15135ddb1
hexd525c9

13968841 has 4 divisors (see below), whose sum is σ = 13983184. Its totient is φ = 13954500.

The previous prime is 13968821. The next prime is 13968847. The reversal of 13968841 is 14886931.

13968841 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14886931 = 67222193.

It is a cyclic number.

It is not a de Polignac number, because 13968841 - 25 = 13968809 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13968794 and 13968803.

It is not an unprimeable number, because it can be changed into a prime (13968847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5595 + ... + 7696.

It is an arithmetic number, because the mean of its divisors is an integer number (3495796).

Almost surely, 213968841 is an apocalyptic number.

It is an amenable number.

13968841 is a deficient number, since it is larger than the sum of its proper divisors (14343).

13968841 is a wasteful number, since it uses less digits than its factorization.

13968841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14342.

The product of its digits is 41472, while the sum is 40.

The square root of 13968841 is about 3737.4912708928. The cubic root of 13968841 is about 240.8352897382.

The spelling of 13968841 in words is "thirteen million, nine hundred sixty-eight thousand, eight hundred forty-one".

Divisors: 1 1051 13291 13968841