Base | Representation |
---|---|
bin | 1110101100100… |
… | …1011110000110 |
3 | 11021222202210101 |
4 | 3223021132012 |
5 | 111240031010 |
6 | 10041114314 |
7 | 1345645060 |
oct | 353113606 |
9 | 137882711 |
10 | 61642630 |
11 | 31883025 |
12 | 1878899a |
13 | ca0383a |
14 | 8288730 |
15 | 562973a |
hex | 3ac9786 |
61642630 has 32 divisors (see below), whose sum is σ = 127946304. Its totient is φ = 20944896.
The previous prime is 61642597. The next prime is 61642643. The reversal of 61642630 is 3624616.
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, 4014 + ... + 11806.
It is an arithmetic number, because the mean of its divisors is an integer number (3998322).
Almost surely, 261642630 is an apocalyptic number.
61642630 is an abundant number, since it is smaller than the sum of its proper divisors (66303674).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
61642630 is a wasteful number, since it uses less digits than its factorization.
61642630 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 7920.
The product of its (nonzero) digits is 5184, while the sum is 28.
The square root of 61642630 is about 7851.2820609121. The cubic root of 61642630 is about 395.0272480269.
The spelling of 61642630 in words is "sixty-one million, six hundred forty-two thousand, six hundred thirty".
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