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38147384385 = 32511255730139
BaseRepresentation
bin100011100001110000…
…101110010001000001
310122110120000220122100
4203201300232101001
51111111212300020
625305154501013
72520220263045
oct434160562101
9118416026570
1038147384385
11151a6227560
127487594769
13379c2cc6c6
141bbc51a025
15ed4038a90
hex8e1c2e441

38147384385 has 48 divisors (see below), whose sum is σ = 72163840320. Its totient is φ = 18487854720.

The previous prime is 38147384371. The next prime is 38147384389. The reversal of 38147384385 is 58348374183.

It is a happy number.

38147384385 is a `hidden beast` number, since 38 + 147 + 38 + 438 + 5 = 666.

It is not a de Polignac number, because 38147384385 - 27 = 38147384257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38147384389) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1250646 + ... + 1280784.

It is an arithmetic number, because the mean of its divisors is an integer number (1503413340).

Almost surely, 238147384385 is an apocalyptic number.

It is an amenable number.

38147384385 is a deficient number, since it is larger than the sum of its proper divisors (34016455935).

38147384385 is a wasteful number, since it uses less digits than its factorization.

38147384385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32718 (or 32715 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 54.

The spelling of 38147384385 in words is "thirty-eight billion, one hundred forty-seven million, three hundred eighty-four thousand, three hundred eighty-five".

Divisors: 1 3 5 9 11 15 33 45 55 99 165 495 2557 7671 12785 23013 28127 30139 38355 84381 90417 115065 140635 150695 253143 271251 331529 421905 452085 994587 1265715 1356255 1657645 2983761 4972935 14918805 77065423 231196269 385327115 693588807 847719653 1155981345 2543158959 3467944035 4238598265 7629476877 12715794795 38147384385