Base | Representation |
---|---|
bin | 1001010110101… |
… | …10111001001001 |
3 | 12110122221020000 |
4 | 10223112321021 |
5 | 130042143300 |
6 | 11441553213 |
7 | 1642011402 |
oct | 453267111 |
9 | 173587200 |
10 | 78474825 |
11 | 4032a330 |
12 | 22345809 |
13 | 13348110 |
14 | a5ca9a9 |
15 | 6d51c00 |
hex | 4ad6e49 |
78474825 has 120 divisors (see below), whose sum is σ = 171405696. Its totient is φ = 34992000.
The previous prime is 78474811. The next prime is 78474901. The reversal of 78474825 is 52847487.
It is not a de Polignac number, because 78474825 - 28 = 78474569 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (45).
It is a Curzon number.
It is an unprimeable number.
It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 289440 + ... + 289710.
Almost surely, 278474825 is an apocalyptic number.
78474825 is a gapful number since it is divisible by the number (75) formed by its first and last digit.
It is an amenable number.
78474825 is an abundant number, since it is smaller than the sum of its proper divisors (92930871).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
78474825 is a wasteful number, since it uses less digits than its factorization.
78474825 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 317 (or 303 counting only the distinct ones).
The product of its digits is 501760, while the sum is 45.
The square root of 78474825 is about 8858.6017519697. The cubic root of 78474825 is about 428.1311084784.
It can be divided in two parts, 7847482 and 5, that added together give a palindrome (7847487).
The spelling of 78474825 in words is "seventy-eight million, four hundred seventy-four thousand, eight hundred twenty-five".
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