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13514681 = 19711299
BaseRepresentation
bin110011100011…
…011110111001
3221102121122202
4303203132321
511424432211
61201355545
7222605255
oct63433671
927377582
1013514681
1176a0864
124638bb5
132a5256b
141b1b265
1512be53b
hexce37b9

13514681 has 4 divisors (see below), whose sum is σ = 14226000. Its totient is φ = 12803364.

The previous prime is 13514663. The next prime is 13514689. The reversal of 13514681 is 18641531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18641531 = 53351727.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13514681 is a prime.

It is a super-2 number, since 2×135146812 = 365293205063522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13514689) 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, 355631 + ... + 355668.

It is an arithmetic number, because the mean of its divisors is an integer number (3556500).

Almost surely, 213514681 is an apocalyptic number.

It is an amenable number.

13514681 is a deficient number, since it is larger than the sum of its proper divisors (711319).

13514681 is an equidigital number, since it uses as much as digits as its factorization.

13514681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711318.

The product of its digits is 2880, while the sum is 29.

The square root of 13514681 is about 3676.2319023696. The cubic root of 13514681 is about 238.1964399884.

The spelling of 13514681 in words is "thirteen million, five hundred fourteen thousand, six hundred eighty-one".

Divisors: 1 19 711299 13514681