Base | Representation |
---|---|
bin | 101000100010111… |
… | …100110111111000 |
3 | 1202102000022202202 |
4 | 220202330313320 |
5 | 2343121011442 |
6 | 151300045332 |
7 | 22600015460 |
oct | 5042746770 |
9 | 1672008682 |
10 | 680250872 |
11 | 319a90604 |
12 | 16b993848 |
13 | aac16212 |
14 | 664b6ba0 |
15 | 3eac0c32 |
hex | 288bcdf8 |
680250872 has 32 divisors (see below), whose sum is σ = 1459538400. Its totient is φ = 291164544.
The previous prime is 680250871. The next prime is 680250889. The reversal of 680250872 is 278052086.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (680250871) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39098 + ... + 53750.
It is an arithmetic number, because the mean of its divisors is an integer number (45610575).
Almost surely, 2680250872 is an apocalyptic number.
It is an amenable number.
680250872 is an abundant number, since it is smaller than the sum of its proper divisors (779287528).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
680250872 is a wasteful number, since it uses less digits than its factorization.
680250872 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 15495 (or 15491 counting only the distinct ones).
The product of its (nonzero) digits is 53760, while the sum is 38.
The square root of 680250872 is about 26081.6194282487. The cubic root of 680250872 is about 879.4740624545.
The spelling of 680250872 in words is "six hundred eighty million, two hundred fifty thousand, eight hundred seventy-two".
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