Base | Representation |
---|---|
bin | 11101010011111… |
… | …11011001000100 |
3 | 122010200102201110 |
4 | 32221333121010 |
5 | 1000421413310 |
6 | 40222125020 |
7 | 6044006220 |
oct | 1651773104 |
9 | 563612643 |
10 | 245888580 |
11 | 116885803 |
12 | 6a420770 |
13 | 3bc33202 |
14 | 24929780 |
15 | 168c0d20 |
hex | ea7f644 |
245888580 has 96 divisors (see below), whose sum is σ = 789820416. Its totient is φ = 55990656.
The previous prime is 245888563. The next prime is 245888581. The reversal of 245888580 is 85888542.
It is a happy number.
It is a super-2 number, since 2×2458885802 = 120922387548832800, which contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (245888581) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127987 + ... + 129893.
It is an arithmetic number, because the mean of its divisors is an integer number (8227296).
Almost surely, 2245888580 is an apocalyptic number.
245888580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 245888580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (394910208).
245888580 is an abundant number, since it is smaller than the sum of its proper divisors (543931836).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
245888580 is a wasteful number, since it uses less digits than its factorization.
245888580 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2233 (or 2231 counting only the distinct ones).
The product of its (nonzero) digits is 819200, while the sum is 48.
The square root of 245888580 is about 15680.8347992063. The cubic root of 245888580 is about 626.4880426216.
The spelling of 245888580 in words is "two hundred forty-five million, eight hundred eighty-eight thousand, five hundred eighty".
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