| Base | Representation |
|---|---|
| bin | 11101010010111… |
| … | …10001101000000 |
| 3 | 122010102112020122 |
| 4 | 32221132031000 |
| 5 | 1000403041030 |
| 6 | 40215155412 |
| 7 | 6042602000 |
| oct | 1651361500 |
| 9 | 563375218 |
| 10 | 245752640 |
| 11 | 1167a2661 |
| 12 | 6a375b68 |
| 13 | 3bbb6383 |
| 14 | 248d2000 |
| 15 | 168958e5 |
| hex | ea5e340 |
245752640 has 112 divisors (see below), whose sum is σ = 682752000. Its totient is φ = 84220416.
The previous prime is 245752627. The next prime is 245752643. The reversal of 245752640 is 46257542.
It is a tau number, because it is divible by the number of its divisors (112).
It is a Harshad number since it is a multiple of its sum of digits (35).
It is a self number, because there is not a number n which added to its sum of digits gives 245752640.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (245752643) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108641 + ... + 110879.
It is an arithmetic number, because the mean of its divisors is an integer number (6096000).
Almost surely, 2245752640 is an apocalyptic number.
245752640 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 245752640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (341376000).
245752640 is an abundant number, since it is smaller than the sum of its proper divisors (436999360).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
245752640 is an equidigital number, since it uses as much as digits as its factorization.
245752640 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2277 (or 2253 counting only the distinct ones).
The product of its (nonzero) digits is 67200, while the sum is 35.
The square root of 245752640 is about 15676.4996092878. The cubic root of 245752640 is about 626.3725696110.
The spelling of 245752640 in words is "two hundred forty-five million, seven hundred fifty-two thousand, six hundred forty".
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