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380016765 = 365137761
BaseRepresentation
bin10110101001101…
…001100001111101
3222111001212000000
4112221221201331
51234241014030
6101413024513
712263042412
oct2651514175
9874055000
10380016765
11185567247
12a7325139
13609659bb
1438682109
1523567860
hex16a6987d

380016765 has 56 divisors (see below), whose sum is σ = 689613048. Its totient is φ = 200931840.

The previous prime is 380016727. The next prime is 380016811. The reversal of 380016765 is 567610083.

It can be written as a sum of positive squares in 4 ways, for example, as 729 + 380016036 = 27^2 + 19494^2 .

It is not a de Polignac number, because 380016765 - 214 = 380000381 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 498985 + ... + 499745.

Almost surely, 2380016765 is an apocalyptic number.

It is an amenable number.

380016765 is a deficient number, since it is larger than the sum of its proper divisors (309596283).

380016765 is an equidigital number, since it uses as much as digits as its factorization.

380016765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921 (or 906 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 380016765 is about 19494.0186980520. The cubic root of 380016765 is about 724.3262960751.

The spelling of 380016765 in words is "three hundred eighty million, sixteen thousand, seven hundred sixty-five".

Divisors: 1 3 5 9 15 27 45 81 135 137 243 405 411 685 729 761 1215 1233 2055 2283 3645 3699 3805 6165 6849 11097 11415 18495 20547 33291 34245 55485 61641 99873 102735 104257 166455 184923 308205 312771 499365 521285 554769 924615 938313 1563855 2773845 2814939 4691565 8444817 14074695 25334451 42224085 76003353 126672255 380016765