Base | Representation |
---|---|
bin | 1001011010100… |
… | …01001010100000 |
3 | 12111121101020000 |
4 | 10231101022200 |
5 | 130204210043 |
6 | 11500420000 |
7 | 1646165463 |
oct | 455211240 |
9 | 174541200 |
10 | 78975648 |
11 | 40641634 |
12 | 22547600 |
13 | 1349206b |
14 | a6bb2da |
15 | 6e002d3 |
hex | 4b512a0 |
78975648 has 60 divisors (see below), whose sum is σ = 232272810. Its totient is φ = 26324352.
The previous prime is 78975599. The next prime is 78975653. The reversal of 78975648 is 84657987.
78975648 is a `hidden beast` number, since 78 + 9 + 7 + 564 + 8 = 666.
It can be written as a sum of positive squares in only one way, i.e., 66781584 + 12194064 = 8172^2 + 3492^2 .
It is a Harshad number since it is a multiple of its sum of digits (54).
It is a junction number, because it is equal to n+sod(n) for n = 78975594 and 78975603.
It is an unprimeable number.
It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 12643 + ... + 17826.
Almost surely, 278975648 is an apocalyptic number.
It is an amenable number.
78975648 is an abundant number, since it is smaller than the sum of its proper divisors (153297162).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
78975648 is a wasteful number, since it uses less digits than its factorization.
78975648 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 30491 (or 30474 counting only the distinct ones).
The product of its digits is 3386880, while the sum is 54.
The square root of 78975648 is about 8886.8244047016. The cubic root of 78975648 is about 429.0399493337.
The spelling of 78975648 in words is "seventy-eight million, nine hundred seventy-five thousand, six hundred forty-eight".
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