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13965081 = 313358079
BaseRepresentation
bin110101010001…
…011100011001
3222021111111020
4311101130121
512033340311
61215153053
7226462344
oct65213431
928244436
1013965081
117979199
124815789
132b7c580
141bd745b
15135cc06
hexd51719

13965081 has 8 divisors (see below), whose sum is σ = 20052480. Its totient is φ = 8593872.

The previous prime is 13965059. The next prime is 13965089. The reversal of 13965081 is 18056931.

13965081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 13965081 - 27 = 13964953 is a prime.

It is a super-2 number, since 2×139650812 = 390046974673122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13965089) 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, 179001 + ... + 179078.

It is an arithmetic number, because the mean of its divisors is an integer number (2506560).

Almost surely, 213965081 is an apocalyptic number.

It is an amenable number.

13965081 is a deficient number, since it is larger than the sum of its proper divisors (6087399).

13965081 is a wasteful number, since it uses less digits than its factorization.

13965081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358095.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 13965081 is about 3736.9882258311. The cubic root of 13965081 is about 240.8136792136.

The spelling of 13965081 in words is "thirteen million, nine hundred sixty-five thousand, eighty-one".

Divisors: 1 3 13 39 358079 1074237 4655027 13965081