| Base | Representation |
|---|---|
| bin | 11101001110010… |
| … | …01000010001000 |
| 3 | 122002021111010000 |
| 4 | 32213021002020 |
| 5 | 1000224013030 |
| 6 | 40154123000 |
| 7 | 6034445442 |
| oct | 1647110210 |
| 9 | 562244100 |
| 10 | 245141640 |
| 11 | 1164155a7 |
| 12 | 6a120460 |
| 13 | 3ba31233 |
| 14 | 247b3492 |
| 15 | 167c4860 |
| hex | e9c9088 |
245141640 has 160 divisors (see below), whose sum is σ = 852687000. Its totient is φ = 63092736.
The previous prime is 245141639. The next prime is 245141641. The reversal of 245141640 is 46141542.
245141640 is a `hidden beast` number, since 2 + 4 + 5 + 14 + 1 + 640 = 666.
It is an interprime number because it is at equal distance from previous prime (245141639) and next prime (245141641).
It can be written as a sum of positive squares in 4 ways, for example, as 196616484 + 48525156 = 14022^2 + 6966^2 .
It is a Harshad number since it is a multiple of its sum of digits (27).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (245141641) 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 39 ways as a sum of consecutive naturals, for example, 92656 + ... + 95264.
Almost surely, 2245141640 is an apocalyptic number.
245141640 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 245141640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (426343500).
245141640 is an abundant number, since it is smaller than the sum of its proper divisors (607545360).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
245141640 is a wasteful number, since it uses less digits than its factorization.
245141640 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2661 (or 2648 counting only the distinct ones).
The product of its (nonzero) digits is 3840, while the sum is 27.
The square root of 245141640 is about 15656.9997125886. Note that the first 3 decimals coincide. The cubic root of 245141640 is about 625.8530346679.
The spelling of 245141640 in words is "two hundred forty-five million, one hundred forty-one thousand, six hundred forty".
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