| Base | Representation |
|---|---|
| bin | 11001110110101… |
| … | …01000101001000 |
| 3 | 120010002121122120 |
| 4 | 30323111011020 |
| 5 | 421010120212 |
| 6 | 33304251240 |
| 7 | 5242305360 |
| oct | 1473250510 |
| 9 | 503077576 |
| 10 | 216879432 |
| 11 | 101471800 |
| 12 | 60770b20 |
| 13 | 35c17233 |
| 14 | 20b379a0 |
| 15 | 1409088c |
| hex | ced5148 |
216879432 has 192 divisors, whose sum is σ = 698664960. Its totient is φ = 54890880.
The previous prime is 216879409. The next prime is 216879437. The reversal of 216879432 is 234978612.
216879432 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.
It is a Harshad number since it is a multiple of its sum of digits (42).
It is not an unprimeable number, because it can be changed into a prime (216879437) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 955303 + ... + 955529.
It is an arithmetic number, because the mean of its divisors is an integer number (3638880).
Almost surely, 2216879432 is an apocalyptic number.
216879432 is a gapful number since it is divisible by the number (22) 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 216879432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (349332480).
216879432 is an abundant number, since it is smaller than the sum of its proper divisors (481785528).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
216879432 is a wasteful number, since it uses less digits than its factorization.
216879432 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 312 (or 297 counting only the distinct ones).
The product of its digits is 145152, while the sum is 42.
The square root of 216879432 is about 14726.8269494824. The cubic root of 216879432 is about 600.8131862711.
The spelling of 216879432 in words is "two hundred sixteen million, eight hundred seventy-nine thousand, four hundred thirty-two".
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