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380055489 = 31147245039
BaseRepresentation
bin10110101001110…
…010111111000001
3222111010211010020
4112221302333001
51234243233424
6101413524053
712263263332
oct2651627701
9874124106
10380055489
11185593350
12a7343629
136097a508
1438692289
1523574079
hex16a72fc1

380055489 has 16 divisors (see below), whose sum is σ = 564572160. Its totient is φ = 225434960.

The previous prime is 380055439. The next prime is 380055493. The reversal of 380055489 is 984550083.

It is a cyclic number.

It is not a de Polignac number, because 380055489 - 211 = 380053441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 380055489.

It is not an unprimeable number, because it can be changed into a prime (380055439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120969 + ... + 124070.

It is an arithmetic number, because the mean of its divisors is an integer number (35285760).

Almost surely, 2380055489 is an apocalyptic number.

It is an amenable number.

380055489 is a deficient number, since it is larger than the sum of its proper divisors (184516671).

380055489 is a wasteful number, since it uses less digits than its factorization.

380055489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245100.

The product of its (nonzero) digits is 172800, while the sum is 42.

The square root of 380055489 is about 19495.0119004837. The cubic root of 380055489 is about 724.3508983746.

The spelling of 380055489 in words is "three hundred eighty million, fifty-five thousand, four hundred eighty-nine".

Divisors: 1 3 11 33 47 141 517 1551 245039 735117 2695429 8086287 11516833 34550499 126685163 380055489