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387408384 = 2932117643
BaseRepresentation
bin10111000101110…
…110001000000000
3222222222101101200
4113011312020000
51243134032014
6102235301200
712412626336
oct2705661000
9888871350
10387408384
11189755720
12a98aa800
136235323c
1439647b56
1524027a09
hex17176200

387408384 has 120 divisors (see below), whose sum is σ = 1219890672. Its totient is φ = 117381120.

The previous prime is 387408383. The next prime is 387408403. The reversal of 387408384 is 483804783.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (387408383) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 46867 + ... + 54509.

Almost surely, 2387408384 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 387408384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (609945336).

387408384 is an abundant number, since it is smaller than the sum of its proper divisors (832482288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

387408384 is a wasteful number, since it uses less digits than its factorization.

387408384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7678 (or 7659 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 45.

The square root of 387408384 is about 19682.6924987411. The cubic root of 387408384 is about 728.9924073566.

The spelling of 387408384 in words is "three hundred eighty-seven million, four hundred eight thousand, three hundred eighty-four".

Divisors: 1 2 3 4 6 8 9 11 12 16 18 22 24 32 33 36 44 48 64 66 72 88 96 99 128 132 144 176 192 198 256 264 288 352 384 396 512 528 576 704 768 792 1056 1152 1408 1536 1584 2112 2304 2816 3168 4224 4608 5632 6336 7643 8448 12672 15286 16896 22929 25344 30572 45858 50688 61144 68787 84073 91716 122288 137574 168146 183432 244576 252219 275148 336292 366864 489152 504438 550296 672584 733728 756657 978304 1008876 1100592 1345168 1467456 1513314 1956608 2017752 2201184 2690336 2934912 3026628 3913216 4035504 4402368 5380672 5869824 6053256 8071008 8804736 10761344 11739648 12106512 16142016 17609472 21522688 24213024 32284032 35218944 43045376 48426048 64568064 96852096 129136128 193704192 387408384