Base | Representation |
---|---|
bin | 10111001010101… |
… | …011010101000010 |
3 | 1000002100201201000 |
4 | 113022223111002 |
5 | 1244000044012 |
6 | 102322352430 |
7 | 12426452631 |
oct | 2712532502 |
9 | 1002321630 |
10 | 388674882 |
11 | 18a440212 |
12 | aa1bb716 |
13 | 626a784b |
14 | 39897518 |
15 | 241c7ddc |
hex | 172ab542 |
388674882 has 16 divisors (see below), whose sum is σ = 863722080. Its totient is φ = 129558276.
The previous prime is 388674823. The next prime is 388674889. The reversal of 388674882 is 288476883.
It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 7197683 = 388674882 / (3 + 8 + 8 + 6 + 7 + 4 + 8 + 8 + 2).
It is not an unprimeable number, because it can be changed into a prime (388674889) 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, 3598788 + ... + 3598895.
It is an arithmetic number, because the mean of its divisors is an integer number (53982630).
Almost surely, 2388674882 is an apocalyptic number.
388674882 is an abundant number, since it is smaller than the sum of its proper divisors (475047198).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
388674882 is a wasteful number, since it uses less digits than its factorization.
388674882 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 7197694 (or 7197688 counting only the distinct ones).
The product of its digits is 4128768, while the sum is 54.
The square root of 388674882 is about 19714.8391319838. The cubic root of 388674882 is about 729.7859396134.
The spelling of 388674882 in words is "three hundred eighty-eight million, six hundred seventy-four thousand, eight hundred eighty-two".
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