Base | Representation |
---|---|
bin | 110000101010001… |
… | …111101111000110 |
3 | 2002220011110000112 |
4 | 300222033233012 |
5 | 3132443141440 |
6 | 213001513022 |
7 | 26142060104 |
oct | 6052175706 |
9 | 2086143015 |
10 | 816380870 |
11 | 38990a038 |
12 | 1a94a2772 |
13 | 100199c06 |
14 | 7a5d0c74 |
15 | 4ba10965 |
hex | 30a8fbc6 |
816380870 has 16 divisors (see below), whose sum is σ = 1474720128. Its totient is φ = 325389120.
The previous prime is 816380869. The next prime is 816380893. The reversal of 816380870 is 78083618.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142454 + ... + 148073.
It is an arithmetic number, because the mean of its divisors is an integer number (92170008).
Almost surely, 2816380870 is an apocalyptic number.
816380870 is a deficient number, since it is larger than the sum of its proper divisors (658339258).
816380870 is a wasteful number, since it uses less digits than its factorization.
816380870 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 290815.
The product of its (nonzero) digits is 64512, while the sum is 41.
The square root of 816380870 is about 28572.3794948898. The cubic root of 816380870 is about 934.6111111159.
The spelling of 816380870 in words is "eight hundred sixteen million, three hundred eighty thousand, eight hundred seventy".
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