| Base | Representation |
|---|---|
| bin | 10011111001001010… |
| … | …111110100001001000 |
| 3 | 2001010122010022200000 |
| 4 | 103321022332201020 |
| 5 | 322221212222410 |
| 6 | 13451320443000 |
| 7 | 1354220220540 |
| oct | 237112764110 |
| 9 | 61118108600 |
| 10 | 21360273480 |
| 11 | 9071354687 |
| 12 | 4181619460 |
| 13 | 20254571a0 |
| 14 | 1068c16320 |
| 15 | 8503b4dc0 |
| hex | 4f92be848 |
21360273480 has 1536 divisors, whose sum is σ = 98625945600. Its totient is φ = 4031078400.
The previous prime is 21360273433. The next prime is 21360273481. The reversal of 21360273480 is 8437206312.
It is a happy number.
21360273480 is a `hidden beast` number, since 2 + 1 + 3 + 602 + 7 + 3 + 48 + 0 = 666.
It is a super-2 number, since 2×213602734802 (a number of 21 digits) contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is not an unprimeable number, because it can be changed into a prime (21360273481) 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 383 ways as a sum of consecutive naturals, for example, 520982260 + ... + 520982300.
It is an arithmetic number, because the mean of its divisors is an integer number (64209600).
Almost surely, 221360273480 is an apocalyptic number.
21360273480 is a gapful number since it is divisible by the number (20) 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 21360273480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49312972800).
21360273480 is an abundant number, since it is smaller than the sum of its proper divisors (77265672120).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
21360273480 is a wasteful number, since it uses less digits than its factorization.
21360273480 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 137 (or 121 counting only the distinct ones).
The product of its (nonzero) digits is 48384, while the sum is 36.
Adding to 21360273480 its reverse (8437206312), we get a palindrome (29797479792).
The spelling of 21360273480 in words is "twenty-one billion, three hundred sixty million, two hundred seventy-three thousand, four hundred eighty".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.075 sec. • engine limits •