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14145215 = 571989239
BaseRepresentation
bin110101111101…
…011010111111
3222121122120212
4311331122333
512110121330
61223103035
7231142460
oct65753277
928548525
1014145215
117a91567
1248a1a7b
132c13566
141c42d67
151396295
hexd7d6bf

14145215 has 32 divisors (see below), whose sum is σ = 20736000. Its totient is φ = 9047808.

The previous prime is 14145193. The next prime is 14145217. The reversal of 14145215 is 51254141.

It is not a de Polignac number, because 14145215 - 212 = 14141119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14145217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59066 + ... + 59304.

It is an arithmetic number, because the mean of its divisors is an integer number (648000).

Almost surely, 214145215 is an apocalyptic number.

14145215 is a deficient number, since it is larger than the sum of its proper divisors (6590785).

14145215 is a wasteful number, since it uses less digits than its factorization.

14145215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359.

The product of its digits is 800, while the sum is 23.

The square root of 14145215 is about 3761.0124966557. The cubic root of 14145215 is about 241.8446684362.

Adding to 14145215 its reverse (51254141), we get a palindrome (65399356).

The spelling of 14145215 in words is "fourteen million, one hundred forty-five thousand, two hundred fifteen".

Divisors: 1 5 7 19 35 89 95 133 239 445 623 665 1195 1673 1691 3115 4541 8365 8455 11837 21271 22705 31787 59185 106355 148897 158935 404149 744485 2020745 2829043 14145215