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380002565 = 51917772251
BaseRepresentation
bin10110101001100…
…110000100000101
3222111001010112002
4112221212010011
51234240040230
6101412435045
712262653125
oct2651460405
9874033462
10380002565
11185557608
12a7318a85
136095c3b7
143867ac85
1523563545
hex16a66105

380002565 has 16 divisors (see below), whose sum is σ = 480486720. Its totient is φ = 287712000.

The previous prime is 380002529. The next prime is 380002583. The reversal of 380002565 is 565200083.

It is not a de Polignac number, because 380002565 - 210 = 380001541 is a prime.

It is a super-3 number, since 3×3800025653 (a number of 27 digits) contains 333 as substring.

380002565 is a modest number, since divided by 2565 gives 380 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167690 + ... + 169940.

It is an arithmetic number, because the mean of its divisors is an integer number (30030420).

Almost surely, 2380002565 is an apocalyptic number.

380002565 is the 11255-th octagonal number.

It is an amenable number.

380002565 is a deficient number, since it is larger than the sum of its proper divisors (100484155).

380002565 is a wasteful number, since it uses less digits than its factorization.

380002565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4052.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 380002565 is about 19493.6544803687. The cubic root of 380002565 is about 724.3172740507.

The spelling of 380002565 in words is "three hundred eighty million, two thousand, five hundred sixty-five".

Divisors: 1 5 19 95 1777 2251 8885 11255 33763 42769 168815 213845 4000027 20000135 76000513 380002565