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13968356 = 2217205417
BaseRepresentation
bin110101010010…
…001111100100
3222021122222112
4311102033210
512033441411
61215220152
7226505033
oct65221744
928248875
1013968356
1179806a6
124817658
132b80bcc
141bd871a
15135db8b
hexd523e4

13968356 has 12 divisors (see below), whose sum is σ = 25882668. Its totient is φ = 6573312.

The previous prime is 13968347. The next prime is 13968371. The reversal of 13968356 is 65386931.

13968356 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 11356900 + 2611456 = 3370^2 + 1616^2 .

It is a super-2 number, since 2×139683562 = 390229938685472, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102641 + ... + 102776.

It is an arithmetic number, because the mean of its divisors is an integer number (2156889).

Almost surely, 213968356 is an apocalyptic number.

It is an amenable number.

13968356 is a deficient number, since it is larger than the sum of its proper divisors (11914312).

13968356 is a wasteful number, since it uses less digits than its factorization.

13968356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205438 (or 205436 counting only the distinct ones).

The product of its digits is 116640, while the sum is 41.

The square root of 13968356 is about 3737.4263872349. The cubic root of 13968356 is about 240.8325024283.

The spelling of 13968356 in words is "thirteen million, nine hundred sixty-eight thousand, three hundred fifty-six".

Divisors: 1 2 4 17 34 68 205417 410834 821668 3492089 6984178 13968356