Base | Representation |
---|---|
bin | 10000011000011… |
… | …11111011111010 |
3 | 100120121002202222 |
4 | 20030033323322 |
5 | 240140204410 |
6 | 21345324042 |
7 | 3256060565 |
oct | 1014177372 |
9 | 316532688 |
10 | 137428730 |
11 | 7063626a |
12 | 3a036622 |
13 | 22619b9a |
14 | 143754dc |
15 | c0e9955 |
hex | 830fefa |
137428730 has 32 divisors (see below), whose sum is σ = 258264720. Its totient is φ = 52600320.
The previous prime is 137428721. The next prime is 137428741. The reversal of 137428730 is 37824731.
It is a Cunningham number, because it is equal to 117232+1.
It can be written as a sum of positive squares in 8 ways, for example, as 30946969 + 106481761 = 5563^2 + 10319^2 .
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19526 + ... + 25614.
Almost surely, 2137428730 is an apocalyptic number.
137428730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
137428730 is a deficient number, since it is larger than the sum of its proper divisors (120835990).
137428730 is a wasteful number, since it uses less digits than its factorization.
137428730 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 6194.
The product of its (nonzero) digits is 28224, while the sum is 35.
The square root of 137428730 is about 11723.0000426512. Note that the first 4 decimals coincide. The cubic root of 137428730 is about 516.0508658267.
The spelling of 137428730 in words is "one hundred thirty-seven million, four hundred twenty-eight thousand, seven hundred thirty".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.070 sec. • engine limits •