Base | Representation |
---|---|
bin | 10111001010011… |
… | …101011101000000 |
3 | 1000002020211202001 |
4 | 113022131131000 |
5 | 1243441234143 |
6 | 102321233344 |
7 | 12426125140 |
oct | 2712353500 |
9 | 1002224661 |
10 | 388618048 |
11 | 18a401545 |
12 | aa192854 |
13 | 62687a10 |
14 | 39880920 |
15 | 241b614d |
hex | 1729d740 |
388618048 has 112 divisors (see below), whose sum is σ = 967800960. Its totient is φ = 150718464.
The previous prime is 388618037. The next prime is 388618057. The reversal of 388618048 is 840816883.
It is a tau number, because it is divible by the number of its divisors (112).
It is a junction number, because it is equal to n+sod(n) for n = 388617989 and 388618007.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 308043 + ... + 309301.
It is an arithmetic number, because the mean of its divisors is an integer number (8641080).
Almost surely, 2388618048 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 388618048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (483900480).
388618048 is an abundant number, since it is smaller than the sum of its proper divisors (579182912).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
388618048 is a wasteful number, since it uses less digits than its factorization.
388618048 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1344 (or 1334 counting only the distinct ones).
The product of its (nonzero) digits is 294912, while the sum is 46.
The square root of 388618048 is about 19713.3976777216. The cubic root of 388618048 is about 729.7503668868.
The spelling of 388618048 in words is "three hundred eighty-eight million, six hundred eighteen thousand, forty-eight".
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