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388106814 = 23155941491
BaseRepresentation
bin10111001000100…
…000101000111110
31000001021212110110
4113020200220332
51243323404224
6102302250450
712421565514
oct2710405076
91001255413
10388106814
1118a092437
12a9b86a26
1362539104
143978a4b4
1524114929
hex17220a3e

388106814 has 16 divisors (see below), whose sum is σ = 776730240. Its totient is φ = 129282840.

The previous prime is 388106791. The next prime is 388106819. The reversal of 388106814 is 418601883.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388106819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11392 + ... + 30099.

It is an arithmetic number, because the mean of its divisors is an integer number (48545640).

Almost surely, 2388106814 is an apocalyptic number.

388106814 is an abundant number, since it is smaller than the sum of its proper divisors (388623426).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

388106814 is a wasteful number, since it uses less digits than its factorization.

388106814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43055.

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 388106814 is about 19700.4267466469. The cubic root of 388106814 is about 729.4302265713.

The spelling of 388106814 in words is "three hundred eighty-eight million, one hundred six thousand, eight hundred fourteen".

Divisors: 1 2 3 6 1559 3118 4677 9354 41491 82982 124473 248946 64684469 129368938 194053407 388106814