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386852121 = 32244117609
BaseRepresentation
bin10111000011101…
…110010100011001
3222221221010100100
4113003232110121
51243013231441
6102215330013
712405121515
oct2703562431
9887833310
10386852121
111894057a7
12a9680909
13621b9ca6
1439541145
1523e67cb6
hex170ee519

386852121 has 12 divisors (see below), whose sum is σ = 559047060. Its totient is φ = 257781120.

The previous prime is 386852099. The next prime is 386852129. The reversal of 386852121 is 121258683.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 151659225 + 235192896 = 12315^2 + 15336^2 .

It is not a de Polignac number, because 386852121 - 218 = 386589977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (386852129) 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, 13165 + ... + 30773.

It is an arithmetic number, because the mean of its divisors is an integer number (46587255).

Almost surely, 2386852121 is an apocalyptic number.

It is an amenable number.

386852121 is a deficient number, since it is larger than the sum of its proper divisors (172194939).

386852121 is a wasteful number, since it uses less digits than its factorization.

386852121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20056 (or 20053 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 386852121 is about 19668.5566577723. The cubic root of 386852121 is about 728.6433306366.

The spelling of 386852121 in words is "three hundred eighty-six million, eight hundred fifty-two thousand, one hundred twenty-one".

Divisors: 1 3 9 2441 7323 17609 21969 52827 158481 42983569 128950707 386852121