Base | Representation |
---|---|
bin | 100110101001110… |
… | …1000000001010000 |
3 | 10100101111221012100 |
4 | 1031103220001100 |
5 | 10124012142123 |
6 | 332411000400 |
7 | 44066143536 |
oct | 11523500120 |
9 | 3311457170 |
10 | 1296990288 |
11 | 606132000 |
12 | 302439100 |
13 | 178923099 |
14 | c437a156 |
15 | 78ce8643 |
hex | 4d4e8050 |
1296990288 has 240 divisors, whose sum is σ = 4092184512. Its totient is φ = 383328000.
The previous prime is 1296990283. The next prime is 1296990313. The reversal of 1296990288 is 8820996921.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1296990283) 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 47 ways as a sum of consecutive naturals, for example, 12841438 + ... + 12841538.
Almost surely, 21296990288 is an apocalyptic number.
1296990288 is a gapful number since it is divisible by the number (18) 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 1296990288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2046092256).
1296990288 is an abundant number, since it is smaller than the sum of its proper divisors (2795194224).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1296990288 is a wasteful number, since it uses less digits than its factorization.
1296990288 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 215 (or 184 counting only the distinct ones).
The product of its (nonzero) digits is 1119744, while the sum is 54.
The square root of 1296990288 is about 36013.7513736073. The cubic root of 1296990288 is about 1090.5499814060.
The spelling of 1296990288 in words is "one billion, two hundred ninety-six million, nine hundred ninety thousand, two hundred eighty-eight".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.061 sec. • engine limits •