| Base | Representation |
|---|---|
| bin | 1000010000001001… |
| … | …1100101110001000 |
| 3 | 12201101100120101000 |
| 4 | 2010002130232020 |
| 5 | 14014100000230 |
| 6 | 1003452055000 |
| 7 | 105616116306 |
| oct | 20402345610 |
| 9 | 5641316330 |
| 10 | 2215234440 |
| 11 | a37495471 |
| 12 | 519a64460 |
| 13 | 293c36913 |
| 14 | 1702c5276 |
| 15 | ce72ab60 |
| hex | 8409cb88 |
2215234440 has 128 divisors (see below), whose sum is σ = 7555996800. Its totient is φ = 576979200.
The previous prime is 2215234423. The next prime is 2215234523. The reversal of 2215234440 is 444325122.
2215234440 is a `hidden beast` number, since 2 + 215 + 2 + 3 + 4 + 440 = 666.
It is a super-2 number, since 2×22152344402 = 9814527248324227200, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (27).
It is an unprimeable number.
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 31 ways as a sum of consecutive naturals, for example, 22590 + ... + 70290.
It is an arithmetic number, because the mean of its divisors is an integer number (59031225).
Almost surely, 22215234440 is an apocalyptic number.
2215234440 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 2215234440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3777998400).
2215234440 is an abundant number, since it is smaller than the sum of its proper divisors (5340762360).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2215234440 is a wasteful number, since it uses less digits than its factorization.
2215234440 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 47764 (or 47754 counting only the distinct ones).
The product of its (nonzero) digits is 7680, while the sum is 27.
The square root of 2215234440 is about 47066.2770994265. The cubic root of 2215234440 is about 1303.5866320585.
Adding to 2215234440 its reverse (444325122), we get a palindrome (2659559562).
The spelling of 2215234440 in words is "two billion, two hundred fifteen million, two hundred thirty-four thousand, four hundred forty".
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