Base | Representation |
---|---|
bin | 1000001101011… |
… | …10000101010000 |
3 | 11210120222112112 |
4 | 10012232011100 |
5 | 120112323410 |
6 | 10500044452 |
7 | 1464250400 |
oct | 406560520 |
9 | 153528475 |
10 | 68870480 |
11 | 3596a458 |
12 | 1b093728 |
13 | 11364683 |
14 | 920a800 |
15 | 60a6105 |
hex | 41ae150 |
68870480 has 60 divisors (see below), whose sum is σ = 186277140. Its totient is φ = 23611392.
The previous prime is 68870471. The next prime is 68870489. The reversal of 68870480 is 8407886.
It is a happy number.
It is an interprime number because it is at equal distance from previous prime (68870471) and next prime (68870489).
It can be written as a sum of positive squares in 2 ways, for example, as 10010896 + 58859584 = 3164^2 + 7672^2 .
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (68870489) 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, 4865 + ... + 12704.
It is an arithmetic number, because the mean of its divisors is an integer number (3104619).
Almost surely, 268870480 is an apocalyptic number.
It is an amenable number.
68870480 is an abundant number, since it is smaller than the sum of its proper divisors (117406660).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68870480 is a wasteful number, since it uses less digits than its factorization.
68870480 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 17596 (or 17583 counting only the distinct ones).
The product of its (nonzero) digits is 86016, while the sum is 41.
The square root of 68870480 is about 8298.8240130756. The cubic root of 68870480 is about 409.8997970475.
It can be divided in two parts, 68 and 870480, that multiplied together give a triangular number (59192640 = T10880).
The spelling of 68870480 in words is "sixty-eight million, eight hundred seventy thousand, four hundred eighty".
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