| Base | Representation |
|---|---|
| bin | 1001011001110… |
| … | …00001011001000 |
| 3 | 12111102011210220 |
| 4 | 10230320023020 |
| 5 | 130142421123 |
| 6 | 11454310040 |
| 7 | 1645261164 |
| oct | 454701310 |
| 9 | 174364726 |
| 10 | 78873288 |
| 11 | 4058173a |
| 12 | 224b8320 |
| 13 | 134575b0 |
| 14 | a691ca4 |
| 15 | 6dcece3 |
| hex | 4b382c8 |
78873288 has 64 divisors (see below), whose sum is σ = 215322240. Its totient is φ = 23929344.
The previous prime is 78873281. The next prime is 78873329. The reversal of 78873288 is 88237887.
It is a happy number.
It is a super-3 number, since 3×788732883 (a number of 25 digits) contains 333 as substring.
It is a self number, because there is not a number n which added to its sum of digits gives 78873288.
It is not an unprimeable number, because it can be changed into a prime (78873281) by changing a digit.
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 15 ways as a sum of consecutive naturals, for example, 21045 + ... + 24507.
It is an arithmetic number, because the mean of its divisors is an integer number (3364410).
Almost surely, 278873288 is an apocalyptic number.
78873288 is a gapful number since it is divisible by the number (78) 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 78873288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107661120).
78873288 is an abundant number, since it is smaller than the sum of its proper divisors (136448952).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
78873288 is a wasteful number, since it uses less digits than its factorization.
78873288 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3558 (or 3554 counting only the distinct ones).
The product of its digits is 1204224, while the sum is 51.
The square root of 78873288 is about 8881.0634498353. The cubic root of 78873288 is about 428.8545102465.
It can be divided in two parts, 7887 and 3288, that added together give a triangular number (11175 = T149).
The spelling of 78873288 in words is "seventy-eight million, eight hundred seventy-three thousand, two hundred eighty-eight".
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