Base | Representation |
---|---|
bin | 1110110011001000110… |
… | …0001011010101110000 |
3 | 220022020210001110201100 |
4 | 3230302030023111300 |
5 | 13131143222422230 |
6 | 312444255204400 |
7 | 24240300614640 |
oct | 3546214132560 |
9 | 808223043640 |
10 | 254245123440 |
11 | 98908820330 |
12 | 41336216700 |
13 | 1ac8a706459 |
14 | c43c532520 |
15 | 693085d660 |
hex | 3b3230b570 |
254245123440 has 480 divisors, whose sum is σ = 1065567799296. Its totient is φ = 52778557440.
The previous prime is 254245123367. The next prime is 254245123441. The reversal of 254245123440 is 44321542452.
254245123440 is a `hidden beast` number, since 2 + 54 + 2 + 45 + 123 + 440 = 666.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a junction number, because it is equal to n+sod(n) for n = 254245123395 and 254245123404.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (254245123441) by changing a digit.
It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 87760072 + ... + 87762968.
Almost surely, 2254245123440 is an apocalyptic number.
254245123440 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 254245123440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (532783899648).
254245123440 is an abundant number, since it is smaller than the sum of its proper divisors (811322675856).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
254245123440 is a wasteful number, since it uses less digits than its factorization.
254245123440 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 4517 (or 4508 counting only the distinct ones).
The product of its (nonzero) digits is 153600, while the sum is 36.
Adding to 254245123440 its reverse (44321542452), we get a palindrome (298566665892).
The spelling of 254245123440 in words is "two hundred fifty-four billion, two hundred forty-five million, one hundred twenty-three thousand, four hundred forty".
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