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388611113 = 1189396947
BaseRepresentation
bin10111001010011…
…011110000101001
31000002020111020012
4113022123300221
51243441023423
6102321141305
712426066002
oct2712336051
91002214205
10388611113
1118a3a7310
12aa18a835
1362684807
143987c1a9
15241b4078
hex1729bc29

388611113 has 8 divisors (see below), whose sum is σ = 428703840. Its totient is φ = 349312480.

The previous prime is 388611103. The next prime is 388611121. The reversal of 388611113 is 311116883.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 388611113 - 212 = 388607017 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 388611113.

It is not an unprimeable number, because it can be changed into a prime (388611103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197495 + ... + 199452.

It is an arithmetic number, because the mean of its divisors is an integer number (53587980).

Almost surely, 2388611113 is an apocalyptic number.

It is an amenable number.

388611113 is a deficient number, since it is larger than the sum of its proper divisors (40092727).

388611113 is a wasteful number, since it uses less digits than its factorization.

388611113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397047.

The product of its digits is 3456, while the sum is 32.

The square root of 388611113 is about 19713.2217813324. The cubic root of 388611113 is about 729.7460259932.

Adding to 388611113 its reverse (311116883), we get a palindrome (699727996).

The spelling of 388611113 in words is "three hundred eighty-eight million, six hundred eleven thousand, one hundred thirteen".

Divisors: 1 11 89 979 396947 4366417 35328283 388611113