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289138363 = 17137124147
BaseRepresentation
bin10001001110111…
…110011010111011
3202011001202021021
4101032332122323
51043004411423
644405123311
710110430663
oct2116763273
9664052237
10289138363
11139235a28
12809b9537
1347b96cb7
142a5871a3
151a5b595d
hex113be6bb

289138363 has 8 divisors (see below), whose sum is σ = 308383632. Its totient is φ = 270141696.

The previous prime is 289138357. The next prime is 289138393. The reversal of 289138363 is 363831982.

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

It is not a de Polignac number, because 289138363 - 217 = 289007291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (289138303) 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, 59745 + ... + 64402.

It is an arithmetic number, because the mean of its divisors is an integer number (38547954).

Almost surely, 2289138363 is an apocalyptic number.

289138363 is a deficient number, since it is larger than the sum of its proper divisors (19245269).

289138363 is a wasteful number, since it uses less digits than its factorization.

289138363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124301.

The product of its digits is 186624, while the sum is 43.

The square root of 289138363 is about 17004.0690130333. The cubic root of 289138363 is about 661.2543965984.

The spelling of 289138363 in words is "two hundred eighty-nine million, one hundred thirty-eight thousand, three hundred sixty-three".

Divisors: 1 17 137 2329 124147 2110499 17008139 289138363