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388105034 = 2194052517
BaseRepresentation
bin10111001000100…
…000001101001010
31000001021210000112
4113020200031022
51243323330114
6102302234322
712421560362
oct2710401512
91001253015
10388105034
1118a091069
12a9b859a2
1362538365
14397899a2
152411413e
hex1722034a

388105034 has 4 divisors (see below), whose sum is σ = 582157554. Its totient is φ = 194052516.

The previous prime is 388105033. The next prime is 388105063. The reversal of 388105034 is 430501883.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 430501883 = 761500269.

It can be written as a sum of positive squares in only one way, i.e., 387971809 + 133225 = 19697^2 + 365^2 .

It is a super-2 number, since 2×3881050342 = 301251034832282312, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (388105033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97026257 + ... + 97026260.

Almost surely, 2388105034 is an apocalyptic number.

388105034 is a deficient number, since it is larger than the sum of its proper divisors (194052520).

388105034 is a wasteful number, since it uses less digits than its factorization.

388105034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194052519.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 388105034 is about 19700.3815699087. The cubic root of 388105034 is about 729.4291114249.

The spelling of 388105034 in words is "three hundred eighty-eight million, one hundred five thousand, thirty-four".

Divisors: 1 2 194052517 388105034