Base | Representation |
---|---|
bin | 1000001000101… |
… | …01110000100000 |
3 | 11202102021200101 |
4 | 10010111300200 |
5 | 114432342220 |
6 | 10434432144 |
7 | 1456041364 |
oct | 404256040 |
9 | 152367611 |
10 | 68246560 |
11 | 35583718 |
12 | 1aa32654 |
13 | 111a66a5 |
14 | 90c72a4 |
15 | 5ed130a |
hex | 4115c20 |
68246560 has 24 divisors (see below), whose sum is σ = 161232876. Its totient is φ = 27298560.
The previous prime is 68246533. The next prime is 68246561. The reversal of 68246560 is 6564286.
It can be written as a sum of positive squares in 2 ways, for example, as 67963536 + 283024 = 8244^2 + 532^2 .
It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.
It is not an unprimeable number, because it can be changed into a prime (68246561) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213111 + ... + 213430.
Almost surely, 268246560 is an apocalyptic number.
It is an amenable number.
68246560 is an abundant number, since it is smaller than the sum of its proper divisors (92986316).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68246560 is a wasteful number, since it uses less digits than its factorization.
68246560 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 426556 (or 426548 counting only the distinct ones).
The product of its (nonzero) digits is 69120, while the sum is 37.
The square root of 68246560 is about 8261.1476200344. The cubic root of 68246560 is about 408.6582351899.
The spelling of 68246560 in words is "sixty-eight million, two hundred forty-six thousand, five hundred sixty".
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