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387200085 = 3525813339
BaseRepresentation
bin10111000101000…
…011010001010101
3222222120210122220
4113011003101111
51243110400320
6102231012553
712411101136
oct2705032125
9888523586
10387200085
11189623178
12a980a159
13622ac49c
14395d1c8d
1523ed5e40
hex17143455

387200085 has 8 divisors (see below), whose sum is σ = 619520160. Its totient is φ = 206506704.

The previous prime is 387200081. The next prime is 387200111. The reversal of 387200085 is 580002783.

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

It is not a de Polignac number, because 387200085 - 22 = 387200081 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387200081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12906655 + ... + 12906684.

It is an arithmetic number, because the mean of its divisors is an integer number (77440020).

Almost surely, 2387200085 is an apocalyptic number.

It is an amenable number.

387200085 is a deficient number, since it is larger than the sum of its proper divisors (232320075).

387200085 is a wasteful number, since it uses less digits than its factorization.

387200085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25813347.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 387200085 is about 19677.4003618364. The cubic root of 387200085 is about 728.8617307727.

The spelling of 387200085 in words is "three hundred eighty-seven million, two hundred thousand, eighty-five".

Divisors: 1 3 5 15 25813339 77440017 129066695 387200085