Search a number
-
+
2830351680 = 2633513113223
BaseRepresentation
bin1010100010110011…
…1011110101000000
321022020210202121000
42220230323311000
521244032223210
61144504132000
7130065410112
oct25054736500
97266722530
102830351680
111222729122
1266ba67000
133614c6310
141cbc853b2
15118732ac0
hexa8b3bd40

2830351680 has 448 divisors, whose sum is σ = 10896721920. Its totient is φ = 687439872.

The previous prime is 2830351669. The next prime is 2830351681. The reversal of 2830351680 is 861530382.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2830351681) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12692049 + ... + 12692271.

It is an arithmetic number, because the mean of its divisors is an integer number (24323040).

Almost surely, 22830351680 is an apocalyptic number.

2830351680 is a gapful number since it is divisible by the number (20) 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 2830351680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5448360960).

2830351680 is an abundant number, since it is smaller than the sum of its proper divisors (8066370240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2830351680 is a wasteful number, since it uses less digits than its factorization.

2830351680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375 (or 359 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 2830351680 is about 53201.0496137059. The cubic root of 2830351680 is about 1414.5342488578.

The spelling of 2830351680 in words is "two billion, eight hundred thirty million, three hundred fifty-one thousand, six hundred eighty".