Base | Representation |
---|---|
bin | 1011111010101… |
… | …00101101010000 |
3 | 20222002120122110 |
4 | 11331110231100 |
5 | 201042233210 |
6 | 13530305320 |
7 | 2322442320 |
oct | 575245520 |
9 | 228076573 |
10 | 99961680 |
11 | 51475765 |
12 | 29588240 |
13 | 1792c230 |
14 | d3c1280 |
15 | 8b98420 |
hex | 5f54b50 |
99961680 has 320 divisors, whose sum is σ = 399974400. Its totient is φ = 20072448.
The previous prime is 99961663. The next prime is 99961699. The reversal of 99961680 is 8616999.
It is a Harshad number since it is a multiple of its sum of digits (48).
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 502221 + ... + 502419.
It is an arithmetic number, because the mean of its divisors is an integer number (1249920).
Almost surely, 299961680 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 99961680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (199987200).
99961680 is an abundant number, since it is smaller than the sum of its proper divisors (300012720).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
99961680 is a wasteful number, since it uses less digits than its factorization.
99961680 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 258 (or 252 counting only the distinct ones).
The product of its (nonzero) digits is 209952, while the sum is 48.
The square root of 99961680 is about 9998.0838164120. The cubic root of 99961680 is about 464.0995872252.
The spelling of 99961680 in words is "ninety-nine million, nine hundred sixty-one thousand, six hundred eighty".
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