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289140913 = 17108715647
BaseRepresentation
bin10001001110111…
…111000010110001
3202011001212202201
4101032333002301
51043010002123
644405143201
710110441265
oct2116770261
9664055681
10289140913
11139237936
12809bab01
1347b981c9
142a5880a5
151a5b65ad
hex113bf0b1

289140913 has 8 divisors (see below), whose sum is σ = 306450432. Its totient is φ = 271864896.

The previous prime is 289140911. The next prime is 289140919. The reversal of 289140913 is 319041982.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 289140913 - 21 = 289140911 is a prime.

It is not an unprimeable number, because it can be changed into a prime (289140911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10656 + ... + 26302.

It is an arithmetic number, because the mean of its divisors is an integer number (38306304).

Almost surely, 2289140913 is an apocalyptic number.

It is an amenable number.

289140913 is a deficient number, since it is larger than the sum of its proper divisors (17309519).

289140913 is a wasteful number, since it uses less digits than its factorization.

289140913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16751.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 289140913 is about 17004.1439949208. The cubic root of 289140913 is about 661.2563405278.

The spelling of 289140913 in words is "two hundred eighty-nine million, one hundred forty thousand, nine hundred thirteen".

Divisors: 1 17 1087 15647 18479 265999 17008289 289140913