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13945323 = 374771199
BaseRepresentation
bin110101001100…
…100111101011
3222020111101110
4311030213223
512032222243
61214521403
7226350630
oct65144753
928214343
1013945323
117965367
124806263
132b73592
141bd0187
151356e33
hexd4c9eb

13945323 has 32 divisors (see below), whose sum is σ = 22118400. Its totient is φ = 7650720.

The previous prime is 13945301. The next prime is 13945331. The reversal of 13945323 is 32354931.

It is not a de Polignac number, because 13945323 - 210 = 13944299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13945333) 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, 69978 + ... + 70176.

It is an arithmetic number, because the mean of its divisors is an integer number (691200).

Almost surely, 213945323 is an apocalyptic number.

13945323 is a deficient number, since it is larger than the sum of its proper divisors (8173077).

13945323 is a wasteful number, since it uses less digits than its factorization.

13945323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327.

The product of its digits is 9720, while the sum is 30.

The square root of 13945323 is about 3734.3437174422. The cubic root of 13945323 is about 240.7000567115.

The spelling of 13945323 in words is "thirteen million, nine hundred forty-five thousand, three hundred twenty-three".

Divisors: 1 3 7 21 47 71 141 199 213 329 497 597 987 1393 1491 3337 4179 9353 10011 14129 23359 28059 42387 65471 70077 98903 196413 296709 664063 1992189 4648441 13945323