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13968955 = 5711132791
BaseRepresentation
bin110101010010…
…011000111011
3222021200210201
4311102120323
512034001310
61215223031
7226506550
oct65223073
928250721
1013968955
1179810a0
124817a77
132b81270
141bd8a27
15135de3a
hexd5263b

13968955 has 32 divisors (see below), whose sum is σ = 22514688. Its totient is φ = 8035200.

The previous prime is 13968953. The next prime is 13968961. The reversal of 13968955 is 55986931.

It is not a de Polignac number, because 13968955 - 21 = 13968953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13968953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3610 + ... + 6400.

It is an arithmetic number, because the mean of its divisors is an integer number (703584).

Almost surely, 213968955 is an apocalyptic number.

13968955 is a deficient number, since it is larger than the sum of its proper divisors (8545733).

13968955 is a wasteful number, since it uses less digits than its factorization.

13968955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2827.

The product of its digits is 291600, while the sum is 46.

The square root of 13968955 is about 3737.5065217334. The cubic root of 13968955 is about 240.8359448904.

The spelling of 13968955 in words is "thirteen million, nine hundred sixty-eight thousand, nine hundred fifty-five".

Divisors: 1 5 7 11 13 35 55 65 77 91 143 385 455 715 1001 2791 5005 13955 19537 30701 36283 97685 153505 181415 214907 253981 399113 1074535 1269905 1995565 2793791 13968955