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13868841 = 371934759
BaseRepresentation
bin110100111001…
…111100101001
3222002121110210
4310321330221
512022300331
61213131333
7225611640
oct64717451
928077423
1013868841
117912958
124789b49
132b4781c
141bb0357
15133e446
hexd39f29

13868841 has 16 divisors (see below), whose sum is σ = 22246400. Its totient is φ = 7507728.

The previous prime is 13868837. The next prime is 13868843. The reversal of 13868841 is 14886831.

It is not a de Polignac number, because 13868841 - 22 = 13868837 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13868841.

It is not an unprimeable number, because it can be changed into a prime (13868843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16981 + ... + 17778.

It is an arithmetic number, because the mean of its divisors is an integer number (1390400).

Almost surely, 213868841 is an apocalyptic number.

It is an amenable number.

13868841 is a deficient number, since it is larger than the sum of its proper divisors (8377559).

13868841 is a wasteful number, since it uses less digits than its factorization.

13868841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34788.

The product of its digits is 36864, while the sum is 39.

The square root of 13868841 is about 3724.0892846440. The cubic root of 13868841 is about 240.2592164554.

The spelling of 13868841 in words is "thirteen million, eight hundred sixty-eight thousand, eight hundred forty-one".

Divisors: 1 3 7 19 21 57 133 399 34759 104277 243313 660421 729939 1981263 4622947 13868841