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13947141 = 313357619
BaseRepresentation
bin110101001101…
…000100000101
3222020120212210
4311031010011
512032302031
61214534033
7226356135
oct65150405
928216783
1013947141
11796676a
124807319
132b74360
141bd0ac5
151357746
hexd4d105

13947141 has 8 divisors (see below), whose sum is σ = 20026720. Its totient is φ = 8582832.

The previous prime is 13947139. The next prime is 13947163. The reversal of 13947141 is 14174931.

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

It is not a de Polignac number, because 13947141 - 21 = 13947139 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13947099 and 13947108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13947341) 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, 178771 + ... + 178848.

It is an arithmetic number, because the mean of its divisors is an integer number (2503340).

Almost surely, 213947141 is an apocalyptic number.

It is an amenable number.

13947141 is a deficient number, since it is larger than the sum of its proper divisors (6079579).

13947141 is a wasteful number, since it uses less digits than its factorization.

13947141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357635.

The product of its digits is 3024, while the sum is 30.

The square root of 13947141 is about 3734.5871257744. The cubic root of 13947141 is about 240.7105159813.

The spelling of 13947141 in words is "thirteen million, nine hundred forty-seven thousand, one hundred forty-one".

Divisors: 1 3 13 39 357619 1072857 4649047 13947141