| Base | Representation |
|---|---|
| bin | 111111110010111… |
| … | …1000010101100000 |
| 3 | 12112011222121020210 |
| 4 | 1333211320111200 |
| 5 | 13341000332022 |
| 6 | 552225134120 |
| 7 | 104022052530 |
| oct | 17745702540 |
| 9 | 5464877223 |
| 10 | 2140636512 |
| 11 | 9a9373993 |
| 12 | 4b8a8a340 |
| 13 | 281648331 |
| 14 | 1644274c0 |
| 15 | c7de2a0c |
| hex | 7f978560 |
2140636512 has 96 divisors (see below), whose sum is σ = 6465312000. Its totient is φ = 607477248.
The previous prime is 2140636493. The next prime is 2140636513. The reversal of 2140636512 is 2156360412.
It is a tau number, because it is divible by the number of its divisors (96).
It is a super-2 number, since 2×21406365122 = 9164649353015052288, which contains 22 as substring.
It is a self number, because there is not a number n which added to its sum of digits gives 2140636512.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2140636513) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89439 + ... + 110817.
It is an arithmetic number, because the mean of its divisors is an integer number (67347000).
Almost surely, 22140636512 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 2140636512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3232656000).
2140636512 is an abundant number, since it is smaller than the sum of its proper divisors (4324675488).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2140636512 is a wasteful number, since it uses less digits than its factorization.
2140636512 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 21548 (or 21540 counting only the distinct ones).
The product of its (nonzero) digits is 8640, while the sum is 30.
The square root of 2140636512 is about 46267.0132167617. The cubic root of 2140636512 is about 1288.7864941688.
Adding to 2140636512 its reverse (2156360412), we get a palindrome (4296996924).
The spelling of 2140636512 in words is "two billion, one hundred forty million, six hundred thirty-six thousand, five hundred twelve".
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