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380889 = 3314107
BaseRepresentation
bin1011100111111011001
3201100111000
41130333121
544142024
612055213
73144315
oct1347731
9640430
10380889
11240193
12164509
131044a2
149cb45
1577cc9
hex5cfd9

380889 has 8 divisors (see below), whose sum is σ = 564320. Its totient is φ = 253908.

The previous prime is 380881. The next prime is 380909. The reversal of 380889 is 988083.

It is not a de Polignac number, because 380889 - 23 = 380881 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 380889.

It is not an unprimeable number, because it can be changed into a prime (380881) 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, 7027 + ... + 7080.

It is an arithmetic number, because the mean of its divisors is an integer number (70540).

2380889 is an apocalyptic number.

It is an amenable number.

380889 is a deficient number, since it is larger than the sum of its proper divisors (183431).

380889 is a wasteful number, since it uses less digits than its factorization.

380889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14116 (or 14110 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 380889 is about 617.1620532729. The cubic root of 380889 is about 72.4880043570.

The spelling of 380889 in words is "three hundred eighty thousand, eight hundred eighty-nine".

Divisors: 1 3 9 27 14107 42321 126963 380889