Base | Representation |
---|---|
bin | 1001010001000000… |
… | …0101010101110001 |
3 | 20102100012002112112 |
4 | 2110100011111301 |
5 | 20043213303040 |
6 | 1050450135105 |
7 | 115431140441 |
oct | 22420052561 |
9 | 6370162475 |
10 | 2487244145 |
11 | 1066a91381 |
12 | 594b81495 |
13 | 3083b43c9 |
14 | 198490121 |
15 | e855b365 |
hex | 94405571 |
2487244145 has 8 divisors (see below), whose sum is σ = 2985779880. Its totient is φ = 1989070720.
The previous prime is 2487244139. The next prime is 2487244147. The reversal of 2487244145 is 5414427842.
It can be written as a sum of positive squares in 4 ways, for example, as 63552784 + 2423691361 = 7972^2 + 49231^2 .
It is a sphenic number, since it is the product of 3 distinct primes.
It is a de Polignac number, because none of the positive numbers 2k-2487244145 is a prime.
It is not an unprimeable number, because it can be changed into a prime (2487244147) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75236 + ... + 103125.
It is an arithmetic number, because the mean of its divisors is an integer number (373222485).
Almost surely, 22487244145 is an apocalyptic number.
It is an amenable number.
2487244145 is a deficient number, since it is larger than the sum of its proper divisors (498535735).
2487244145 is a wasteful number, since it uses less digits than its factorization.
2487244145 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 181155.
The product of its digits is 286720, while the sum is 41.
The square root of 2487244145 is about 49872.2783217290. The cubic root of 2487244145 is about 1354.8965566924.
The spelling of 2487244145 in words is "two billion, four hundred eighty-seven million, two hundred forty-four thousand, one hundred forty-five".
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