Base | Representation |
---|---|
bin | 1001010101000… |
… | …00000001000000 |
3 | 12110020111212221 |
4 | 10222200001000 |
5 | 130013000143 |
6 | 11433100424 |
7 | 1640054152 |
oct | 452400100 |
9 | 173214787 |
10 | 78250048 |
11 | 40196468 |
12 | 22257714 |
13 | 13299a06 |
14 | a56cad2 |
15 | 6d0a2ed |
hex | 4aa0040 |
78250048 has 112 divisors (see below), whose sum is σ = 177759360. Its totient is φ = 33972224.
The previous prime is 78250013. The next prime is 78250057. The reversal of 78250048 is 84005287.
It is a super-2 number, since 2×782500482 = 12246140024004608, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (34).
It is a junction number, because it is equal to n+sod(n) for n = 78249995 and 78250022.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1326243 + ... + 1326301.
Almost surely, 278250048 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 78250048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88879680).
78250048 is an abundant number, since it is smaller than the sum of its proper divisors (99509312).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
78250048 is a wasteful number, since it uses less digits than its factorization.
78250048 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 164 (or 154 counting only the distinct ones).
The product of its (nonzero) digits is 17920, while the sum is 34.
The square root of 78250048 is about 8845.9057195971. The cubic root of 78250048 is about 427.7219494292.
It can be divided in two parts, 782 and 50048, that multiplied together give a square (39137536 = 62562).
The spelling of 78250048 in words is "seventy-eight million, two hundred fifty thousand, forty-eight".
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