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388608093 = 3297445141
BaseRepresentation
bin10111001010011…
…011000001011101
31000002020100002100
4113022123001131
51243440424333
6102321115313
712426054126
oct2712330135
91002210070
10388608093
1118a3a5015
12aa188b39
1362683323
143987b04d
15241b3213
hex1729b05d

388608093 has 12 divisors (see below), whose sum is σ = 567110908. Its totient is φ = 256400640.

The previous prime is 388608089. The next prime is 388608097. The reversal of 388608093 is 390806883.

388608093 is a `hidden beast` number, since 38 + 8 + 608 + 0 + 9 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (388608089) and next prime (388608097).

It can be written as a sum of positive squares in 2 ways, for example, as 299532249 + 89075844 = 17307^2 + 9438^2 .

It is not a de Polignac number, because 388608093 - 22 = 388608089 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388608097) 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, 221698 + ... + 223443.

Almost surely, 2388608093 is an apocalyptic number.

It is an amenable number.

388608093 is a deficient number, since it is larger than the sum of its proper divisors (178502815).

388608093 is a wasteful number, since it uses less digits than its factorization.

388608093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445244 (or 445241 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 388608093 is about 19713.1451828469. The cubic root of 388608093 is about 729.7441356383.

The spelling of 388608093 in words is "three hundred eighty-eight million, six hundred eight thousand, ninety-three".

Divisors: 1 3 9 97 291 873 445141 1335423 4006269 43178677 129536031 388608093