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388422423 = 3287749211
BaseRepresentation
bin10111001001101…
…101101100010111
31000001212220101200
4113021231230113
51243414004143
6102313123543
712424351614
oct2711555427
91001786350
10388422423
1118a288574
12aa0b95b3
136261996c
143982d50b
15241781d3
hex1726db17

388422423 has 12 divisors (see below), whose sum is σ = 561705768. Its totient is φ = 258647760.

The previous prime is 388422421. The next prime is 388422427. The reversal of 388422423 is 324224883.

It is a happy number.

It is not a de Polignac number, because 388422423 - 21 = 388422421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388422421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16713 + ... + 32498.

It is an arithmetic number, because the mean of its divisors is an integer number (46808814).

Almost surely, 2388422423 is an apocalyptic number.

388422423 is a deficient number, since it is larger than the sum of its proper divisors (173283345).

388422423 is a wasteful number, since it uses less digits than its factorization.

388422423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50094 (or 50091 counting only the distinct ones).

The product of its digits is 73728, while the sum is 36.

The square root of 388422423 is about 19708.4353260222. The cubic root of 388422423 is about 729.6278975565.

The spelling of 388422423 in words is "three hundred eighty-eight million, four hundred twenty-two thousand, four hundred twenty-three".

Divisors: 1 3 9 877 2631 7893 49211 147633 442899 43158047 129474141 388422423