| Base | Representation |
|---|---|
| bin | 11101010000110… |
| … | …11100100000000 |
| 3 | 122002220122211000 |
| 4 | 32220123210000 |
| 5 | 1000320322210 |
| 6 | 40205252000 |
| 7 | 6040354125 |
| oct | 1650334400 |
| 9 | 562818730 |
| 10 | 245479680 |
| 11 | 116626576 |
| 12 | 6a264000 |
| 13 | 3bb1c064 |
| 14 | 2486074c |
| 15 | 1683eac0 |
| hex | ea1b900 |
245479680 has 144 divisors (see below), whose sum is σ = 871234560. Its totient is φ = 65452032.
The previous prime is 245479679. The next prime is 245479681. The reversal of 245479680 is 86974542.
It is a happy number.
245479680 is a `hidden beast` number, since 24 + 547 + 9 + 6 + 80 = 666.
It is an interprime number because it is at equal distance from previous prime (245479679) and next prime (245479681).
It is a tau number, because it is divible by the number of its divisors (144).
It is a Harshad number since it is a multiple of its sum of digits (45).
It is not an unprimeable number, because it can be changed into a prime (245479681) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31009 + ... + 38111.
It is an arithmetic number, because the mean of its divisors is an integer number (6050240).
Almost surely, 2245479680 is an apocalyptic number.
245479680 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 245479680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (435617280).
245479680 is an abundant number, since it is smaller than the sum of its proper divisors (625754880).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
245479680 is an equidigital number, since it uses as much as digits as its factorization.
245479680 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 7133 (or 7113 counting only the distinct ones).
The product of its (nonzero) digits is 483840, while the sum is 45.
The square root of 245479680 is about 15667.7911653175. The cubic root of 245479680 is about 626.1405775331.
The spelling of 245479680 in words is "two hundred forty-five million, four hundred seventy-nine thousand, six hundred eighty".
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