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13945508 = 2217205081
BaseRepresentation
bin110101001100…
…101010100100
3222020111122022
4311030222210
512032224013
61214522312
7226351313
oct65145244
928214568
1013945508
117965515
124806398
132b736a5
141bd027a
151357008
hexd4caa4

13945508 has 12 divisors (see below), whose sum is σ = 25840332. Its totient is φ = 6562560.

The previous prime is 13945493. The next prime is 13945531. The reversal of 13945508 is 80554931.

It can be written as a sum of positive squares in 2 ways, for example, as 11505664 + 2439844 = 3392^2 + 1562^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102473 + ... + 102608.

It is an arithmetic number, because the mean of its divisors is an integer number (2153361).

Almost surely, 213945508 is an apocalyptic number.

It is an amenable number.

13945508 is a deficient number, since it is larger than the sum of its proper divisors (11894824).

13945508 is a wasteful number, since it uses less digits than its factorization.

13945508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205102 (or 205100 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 13945508 is about 3734.3684874420. The cubic root of 13945508 is about 240.7011210902.

The spelling of 13945508 in words is "thirteen million, nine hundred forty-five thousand, five hundred eight".

Divisors: 1 2 4 17 34 68 205081 410162 820324 3486377 6972754 13945508