Base | Representation |
---|---|
bin | 11110000011110110111101 |
3 | 112211100111111 |
4 | 132003312331 |
5 | 4004131000 |
6 | 440522021 |
7 | 123660061 |
oct | 36036675 |
9 | 15740444 |
10 | 7880125 |
11 | 44a2500 |
12 | 2780311 |
13 | 182b9c6 |
14 | 1091aa1 |
15 | a59cba |
hex | 783dbd |
7880125 has 24 divisors (see below), whose sum is σ = 10830456. Its totient is φ = 5720000.
The previous prime is 7880123. The next prime is 7880143. The reversal of 7880125 is 5210887.
It can be written as a sum of positive squares in 4 ways, for example, as 793881 + 7086244 = 891^2 + 2662^2 .
It is not a de Polignac number, because 7880125 - 21 = 7880123 is a prime.
It is a Duffinian number.
It is a zygodrome in base 3.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (7880123) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14865 + ... + 15385.
It is an arithmetic number, because the mean of its divisors is an integer number (451269).
Almost surely, 27880125 is an apocalyptic number.
It is an amenable number.
7880125 is a deficient number, since it is larger than the sum of its proper divisors (2950331).
7880125 is a wasteful number, since it uses less digits than its factorization.
7880125 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 558 (or 537 counting only the distinct ones).
The product of its (nonzero) digits is 4480, while the sum is 31.
The square root of 7880125 is about 2807.1560341385. The cubic root of 7880125 is about 198.9960101218.
The spelling of 7880125 in words is "seven million, eight hundred eighty thousand, one hundred twenty-five".
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