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386369145 = 3258585981
BaseRepresentation
bin10111000001111…
…000011001111001
3222221000120211100
4113001320121321
51242402303040
6102201122013
712401040441
oct2701703171
9887016740
10386369145
11189105948
12a9489309
136207b1c6
1439457121
1523dbeb30
hex17078679

386369145 has 12 divisors (see below), whose sum is σ = 669706596. Its totient is φ = 206063520.

The previous prime is 386369143. The next prime is 386369167. The reversal of 386369145 is 541963683.

386369145 is a `hidden beast` number, since 3 + 8 + 636 + 9 + 1 + 4 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 241864704 + 144504441 = 15552^2 + 12021^2 .

It is not a de Polignac number, because 386369145 - 21 = 386369143 is a prime.

It is a super-2 number, since 2×3863691452 = 298562232416062050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 8585981 = 386369145 / (3 + 8 + 6 + 3 + 6 + 9 + 1 + 4 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 386369145.

It is not an unprimeable number, because it can be changed into a prime (386369141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4292946 + ... + 4293035.

It is an arithmetic number, because the mean of its divisors is an integer number (55808883).

Almost surely, 2386369145 is an apocalyptic number.

It is an amenable number.

386369145 is a deficient number, since it is larger than the sum of its proper divisors (283337451).

386369145 is a wasteful number, since it uses less digits than its factorization.

386369145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8585992 (or 8585989 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 386369145 is about 19656.2749522894. The cubic root of 386369145 is about 728.3399728612.

The spelling of 386369145 in words is "three hundred eighty-six million, three hundred sixty-nine thousand, one hundred forty-five".

Divisors: 1 3 5 9 15 45 8585981 25757943 42929905 77273829 128789715 386369145