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13908463 = 67207589
BaseRepresentation
bin110101000011…
…100111101111
3222011121211021
4311003213233
512030032323
61214035011
7226135312
oct65034757
928147737
1013908463
11793a6a8
1247a8a67
132b5c87a
141bc0979
15134b05d
hexd439ef

13908463 has 4 divisors (see below), whose sum is σ = 14116120. Its totient is φ = 13700808.

The previous prime is 13908451. The next prime is 13908481. The reversal of 13908463 is 36480931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36480931 = 191920049.

It is a cyclic number.

It is not a de Polignac number, because 13908463 - 29 = 13907951 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 (13908443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103728 + ... + 103861.

It is an arithmetic number, because the mean of its divisors is an integer number (3529030).

Almost surely, 213908463 is an apocalyptic number.

13908463 is a deficient number, since it is larger than the sum of its proper divisors (207657).

13908463 is an equidigital number, since it uses as much as digits as its factorization.

13908463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207656.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 13908463 is about 3729.4051804544. The cubic root of 13908463 is about 240.4877983906.

The spelling of 13908463 in words is "thirteen million, nine hundred eight thousand, four hundred sixty-three".

Divisors: 1 67 207589 13908463