Base | Representation |
---|---|
bin | 11101010011111… |
… | …00011111001000 |
3 | 122010122211101201 |
4 | 32221330133020 |
5 | 1000421023210 |
6 | 40221553544 |
7 | 6043626430 |
oct | 1651743710 |
9 | 563584351 |
10 | 245876680 |
11 | 116877875 |
12 | 6a4158b4 |
13 | 3bc2a97a |
14 | 249252c0 |
15 | 168bc53a |
hex | ea7c7c8 |
245876680 has 32 divisors (see below), whose sum is σ = 632255040. Its totient is φ = 84300480.
The previous prime is 245876569. The next prime is 245876681. The reversal of 245876680 is 86678542.
It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.
It is a self number, because there is not a number n which added to its sum of digits gives 245876680.
It is not an unprimeable number, because it can be changed into a prime (245876681) 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, 438786 + ... + 439345.
It is an arithmetic number, because the mean of its divisors is an integer number (19757970).
Almost surely, 2245876680 is an apocalyptic number.
245876680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
245876680 is an abundant number, since it is smaller than the sum of its proper divisors (386378360).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
245876680 is a wasteful number, since it uses less digits than its factorization.
245876680 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 878149 (or 878145 counting only the distinct ones).
The product of its (nonzero) digits is 645120, while the sum is 46.
The square root of 245876680 is about 15680.4553505311. The cubic root of 245876680 is about 626.4779359736.
The spelling of 245876680 in words is "two hundred forty-five million, eight hundred seventy-six thousand, six hundred eighty".
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