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13968007 = 16978231
BaseRepresentation
bin110101010010…
…001010000111
3222021122111121
4311102022013
512033434012
61215214411
7226504024
oct65221207
928248447
1013968007
117980409
124817407
132b809c1
141bd854b
15135da07
hexd52287

13968007 has 4 divisors (see below), whose sum is σ = 13977936. Its totient is φ = 13958080.

The previous prime is 13968001. The next prime is 13968037. The reversal of 13968007 is 70086931.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13968007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13968001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2419 + ... + 5812.

It is an arithmetic number, because the mean of its divisors is an integer number (3494484).

Almost surely, 213968007 is an apocalyptic number.

13968007 is a deficient number, since it is larger than the sum of its proper divisors (9929).

13968007 is an equidigital number, since it uses as much as digits as its factorization.

13968007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9928.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 13968007 is about 3737.3796970605. The cubic root of 13968007 is about 240.8304966747.

The spelling of 13968007 in words is "thirteen million, nine hundred sixty-eight thousand, seven".

Divisors: 1 1697 8231 13968007