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380388 = 22331699
BaseRepresentation
bin1011100110111100100
3201022210110
41130313210
544133023
612053020
73143001
oct1346744
9638713
10380388
1123a878
12164170
131041a8
149c8a8
1577a93
hex5cde4

380388 has 12 divisors (see below), whose sum is σ = 887600. Its totient is φ = 126792.

The previous prime is 380383. The next prime is 380417. The reversal of 380388 is 883083.

380388 = T127 + T128 + ... + T162.

380388 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (380383) 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 3 ways as a sum of consecutive naturals, for example, 15838 + ... + 15861.

2380388 is an apocalyptic number.

It is an amenable number.

380388 is an abundant number, since it is smaller than the sum of its proper divisors (507212).

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

380388 is a wasteful number, since it uses less digits than its factorization.

380388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31706 (or 31704 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 380388 is about 616.7560295611. The cubic root of 380388 is about 72.4562081953.

The spelling of 380388 in words is "three hundred eighty thousand, three hundred eighty-eight".

Divisors: 1 2 3 4 6 12 31699 63398 95097 126796 190194 380388