Base | Representation |
---|---|
bin | 101011011100010… |
… | …110011000111111 |
3 | 1212210110112000200 |
4 | 223130112120333 |
5 | 2443041231111 |
6 | 200153454543 |
7 | 24030066015 |
oct | 5334263077 |
9 | 1783415020 |
10 | 728852031 |
11 | 344466356 |
12 | 184111453 |
13 | b80019bb |
14 | 6cb288b5 |
15 | 43ec1256 |
hex | 2b71663f |
728852031 has 12 divisors (see below), whose sum is σ = 1053084552. Its totient is φ = 485763696.
The previous prime is 728852029. The next prime is 728852053. The reversal of 728852031 is 130258827.
It is not a de Polignac number, because 728852031 - 21 = 728852029 is a prime.
It is a super-2 number, since 2×7288520312 = 1062450566185649922, which contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (728852431) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29920 + ... + 48506.
It is an arithmetic number, because the mean of its divisors is an integer number (87757046).
Almost surely, 2728852031 is an apocalyptic number.
728852031 is a deficient number, since it is larger than the sum of its proper divisors (324232521).
728852031 is a wasteful number, since it uses less digits than its factorization.
728852031 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 22950 (or 22947 counting only the distinct ones).
The product of its (nonzero) digits is 26880, while the sum is 36.
The square root of 728852031 is about 26997.2596942727. The cubic root of 728852031 is about 899.9391032870.
It can be divided in two parts, 7288 and 52031, that added together give a cube (59319 = 393).
The spelling of 728852031 in words is "seven hundred twenty-eight million, eight hundred fifty-two thousand, thirty-one".
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