Base | Representation |
---|---|
bin | 100101000111101000000 |
3 | 2021210110220 |
4 | 10220331000 |
5 | 302410240 |
6 | 42023040 |
7 | 13224060 |
oct | 4507500 |
9 | 2253426 |
10 | 1216320 |
11 | 760926 |
12 | 4a7a80 |
13 | 337821 |
14 | 2393a0 |
15 | 1905d0 |
hex | 128f40 |
1216320 has 112 divisors (see below), whose sum is σ = 4437888. Its totient is φ = 276480.
The previous prime is 1216277. The next prime is 1216337. The reversal of 1216320 is 236121.
It is a tau number, because it is divible by the number of its divisors (112).
It is a Harshad number since it is a multiple of its sum of digits (15).
It is a self number, because there is not a number n which added to its sum of digits gives 1216320.
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, 6630 + ... + 6810.
It is an arithmetic number, because the mean of its divisors is an integer number (39624).
21216320 is an apocalyptic number.
1216320 is a gapful number since it is divisible by the number (10) 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 1216320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2218944).
1216320 is an abundant number, since it is smaller than the sum of its proper divisors (3221568).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1216320 is a wasteful number, since it uses less digits than its factorization.
1216320 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 208 (or 198 counting only the distinct ones).
The product of its (nonzero) digits is 72, while the sum is 15.
The square root of 1216320 is about 1102.8689858728. The cubic root of 1216320 is about 106.7454279405.
It can be divided in two parts, 121 and 6320, that added together give a triangular number (6441 = T113).
The spelling of 1216320 in words is "one million, two hundred sixteen thousand, three hundred twenty".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.071 sec. • engine limits •