| Base | Representation |
|---|---|
| bin | 1000000001101001… |
| … | …1100000101010100 |
| 3 | 12120010220120222200 |
| 4 | 2000122130011110 |
| 5 | 13403012230140 |
| 6 | 553440324500 |
| 7 | 104250135414 |
| oct | 20032340524 |
| 9 | 5503816880 |
| 10 | 2154414420 |
| 11 | a06124494 |
| 12 | 501613730 |
| 13 | 284460642 |
| 14 | 1661b2644 |
| 15 | c9215030 |
| hex | 8069c154 |
2154414420 has 144 divisors (see below), whose sum is σ = 6944425488. Its totient is φ = 538767360.
The previous prime is 2154414391. The next prime is 2154414467. The reversal of 2154414420 is 244144512.
2154414420 is a `hidden beast` number, since 215 + 4 + 4 + 1 + 442 + 0 = 666.
It can be written as a sum of positive squares in 8 ways, for example, as 23853456 + 2130560964 = 4884^2 + 46158^2 .
It is a super-4 number, since 4×21544144204 (a number of 38 digits) contains 4444 as substring.
It is a congruent number.
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 47 ways as a sum of consecutive naturals, for example, 968910 + ... + 971130.
It is an arithmetic number, because the mean of its divisors is an integer number (48225177).
Almost surely, 22154414420 is an apocalyptic number.
2154414420 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 2154414420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3472212744).
2154414420 is an abundant number, since it is smaller than the sum of its proper divisors (4790011068).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2154414420 is a wasteful number, since it uses less digits than its factorization.
2154414420 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2570 (or 2565 counting only the distinct ones).
The product of its (nonzero) digits is 5120, while the sum is 27.
The square root of 2154414420 is about 46415.6699833149. The cubic root of 2154414420 is about 1291.5456144806.
Adding to 2154414420 its reverse (244144512), we get a palindrome (2398558932).
The spelling of 2154414420 in words is "two billion, one hundred fifty-four million, four hundred fourteen thousand, four hundred twenty".
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