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288082385 = 5230924953
BaseRepresentation
bin10001001010111…
…100100111010001
3202002002002201222
4101022330213101
51042222114020
644330334425
710065442223
oct2112744721
9662062658
10288082385
11138684618
128058a415
13478b7466
142a390413
151a457b25
hex112bc9d1

288082385 has 8 divisors (see below), whose sum is σ = 345862440. Its totient is φ = 230356864.

The previous prime is 288082381. The next prime is 288082387. The reversal of 288082385 is 583280882.

It can be written as a sum of positive squares in 4 ways, for example, as 97752769 + 190329616 = 9887^2 + 13796^2 .

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 288082385 - 22 = 288082381 is a prime.

It is not an unprimeable number, because it can be changed into a prime (288082381) 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, 932 + ... + 24021.

It is an arithmetic number, because the mean of its divisors is an integer number (43232805).

Almost surely, 2288082385 is an apocalyptic number.

It is an amenable number.

288082385 is a deficient number, since it is larger than the sum of its proper divisors (57780055).

288082385 is a wasteful number, since it uses less digits than its factorization.

288082385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27267.

The product of its (nonzero) digits is 245760, while the sum is 44.

The square root of 288082385 is about 16972.9898662551. The cubic root of 288082385 is about 660.4484135154.

The spelling of 288082385 in words is "two hundred eighty-eight million, eighty-two thousand, three hundred eighty-five".

Divisors: 1 5 2309 11545 24953 124765 57616477 288082385