Base | Representation |
---|---|
bin | 10110101101101… |
… | …101000111011000 |
3 | 222120001212111222 |
4 | 112231231013120 |
5 | 1240024030044 |
6 | 101451511212 |
7 | 12305061323 |
oct | 2655550730 |
9 | 876055458 |
10 | 381080024 |
11 | 186123076 |
12 | a7758508 |
13 | 60c48950 |
14 | 3887b7ba |
15 | 236c78ee |
hex | 16b6d1d8 |
381080024 has 96 divisors (see below), whose sum is σ = 845846400. Its totient is φ = 159805440.
The previous prime is 381080009. The next prime is 381080027. The reversal of 381080024 is 420080183.
It is a Harshad number since it is a multiple of its sum of digits (26).
It is a junction number, because it is equal to n+sod(n) for n = 381079975 and 381080002.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (381080027) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 931532 + ... + 931940.
It is an arithmetic number, because the mean of its divisors is an integer number (8810900).
Almost surely, 2381080024 is an apocalyptic number.
381080024 is a gapful number since it is divisible by the number (34) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 381080024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (422923200).
381080024 is an abundant number, since it is smaller than the sum of its proper divisors (464766376).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
381080024 is a wasteful number, since it uses less digits than its factorization.
381080024 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 493 (or 472 counting only the distinct ones).
The product of its (nonzero) digits is 1536, while the sum is 26.
The square root of 381080024 is about 19521.2710651740. The cubic root of 381080024 is about 725.0012042786.
The spelling of 381080024 in words is "three hundred eighty-one million, eighty thousand, twenty-four".
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