Base | Representation |
---|---|
bin | 1010110100001… |
… | …11000100011100 |
3 | 20022201121020021 |
4 | 11122013010130 |
5 | 141211341110 |
6 | 13000401524 |
7 | 2151125140 |
oct | 532070434 |
9 | 208647207 |
10 | 90730780 |
11 | 47240418 |
12 | 264762a4 |
13 | 15a4976a |
14 | c09b220 |
15 | 7e732da |
hex | 568711c |
90730780 has 48 divisors (see below), whose sum is σ = 218566656. Its totient is φ = 30991680.
The previous prime is 90730733. The next prime is 90730781. The reversal of 90730780 is 8703709.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (90730781) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41925 + ... + 44035.
It is an arithmetic number, because the mean of its divisors is an integer number (4553472).
Almost surely, 290730780 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 90730780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109283328).
90730780 is an abundant number, since it is smaller than the sum of its proper divisors (127835876).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
90730780 is a wasteful number, since it uses less digits than its factorization.
90730780 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2434 (or 2432 counting only the distinct ones).
The product of its (nonzero) digits is 10584, while the sum is 34.
The square root of 90730780 is about 9525.2705998307. The cubic root of 90730780 is about 449.3501401570.
The spelling of 90730780 in words is "ninety million, seven hundred thirty thousand, seven hundred eighty".
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