Base | Representation |
---|---|
bin | 10110101100111… |
… | …101011011001000 |
3 | 222112200221120000 |
4 | 112230331123020 |
5 | 1240001302210 |
6 | 101443403000 |
7 | 12303315651 |
oct | 2654753310 |
9 | 875627500 |
10 | 380884680 |
11 | 185aaa330 |
12 | a7683460 |
13 | 60baaa67 |
14 | 3882a528 |
15 | 23689ac0 |
hex | 16b3d6c8 |
380884680 has 160 divisors (see below), whose sum is σ = 1396707840. Its totient is φ = 92327040.
The previous prime is 380884619. The next prime is 380884681. The reversal of 380884680 is 86488083.
It is a Harshad number since it is a multiple of its sum of digits (45).
It is not an unprimeable number, because it can be changed into a prime (380884681) by changing a digit.
It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 30297 + ... + 40983.
It is an arithmetic number, because the mean of its divisors is an integer number (8729424).
Almost surely, 2380884680 is an apocalyptic number.
380884680 is a gapful number since it is divisible by the number (30) 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 380884680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (698353920).
380884680 is an abundant number, since it is smaller than the sum of its proper divisors (1015823160).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
380884680 is a wasteful number, since it uses less digits than its factorization.
380884680 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 10721 (or 10708 counting only the distinct ones).
The product of its (nonzero) digits is 294912, while the sum is 45.
The square root of 380884680 is about 19516.2670610955. The cubic root of 380884680 is about 724.8773030571.
It can be divided in two parts, 3808 and 84680, that added together give a palindrome (88488).
The spelling of 380884680 in words is "three hundred eighty million, eight hundred eighty-four thousand, six hundred eighty".
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