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14013215 = 52802643
BaseRepresentation
bin110101011101…
…001100011111
3222100221111222
4311131030133
512041410330
61220203555
7230052566
oct65351437
928327458
1014013215
117a01377
1248395bb
132b98458
141c0abdd
15136c0e5
hexd5d31f

14013215 has 4 divisors (see below), whose sum is σ = 16815864. Its totient is φ = 11210568.

The previous prime is 14013211. The next prime is 14013217. The reversal of 14013215 is 51231041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51231041 = 110346447.

It is a cyclic number.

It is not a de Polignac number, because 14013215 - 22 = 14013211 is a prime.

It is a super-3 number, since 3×140132153 (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 14013193 and 14013202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14013211) 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, 1401317 + ... + 1401326.

It is an arithmetic number, because the mean of its divisors is an integer number (4203966).

Almost surely, 214013215 is an apocalyptic number.

14013215 is a deficient number, since it is larger than the sum of its proper divisors (2802649).

14013215 is an equidigital number, since it uses as much as digits as its factorization.

14013215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2802648.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 14013215 is about 3743.4228988988. The cubic root of 14013215 is about 241.0900359744.

Adding to 14013215 its reverse (51231041), we get a palindrome (65244256).

The spelling of 14013215 in words is "fourteen million, thirteen thousand, two hundred fifteen".

Divisors: 1 5 2802643 14013215