Base | Representation |
---|---|
bin | 1001100100100… |
… | …01001010100100 |
3 | 12121001222012100 |
4 | 10302101022210 |
5 | 131023130442 |
6 | 11544452100 |
7 | 1663265025 |
oct | 462211244 |
9 | 177058170 |
10 | 80286372 |
11 | 41357381 |
12 | 22a7a030 |
13 | 1383083a |
14 | a93cc4c |
15 | 70ad84c |
hex | 4c912a4 |
80286372 has 18 divisors (see below), whose sum is σ = 202946198. Its totient is φ = 26762112.
The previous prime is 80286347. The next prime is 80286383. The reversal of 80286372 is 27368208.
It is a happy number.
80286372 is a `hidden beast` number, since 8 + 0 + 286 + 372 = 666.
It can be written as a sum of positive squares in only one way, i.e., 68956416 + 11329956 = 8304^2 + 3366^2 .
It is a tau number, because it is divible by the number of its divisors (18).
It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 2230177 = 80286372 / (8 + 0 + 2 + 8 + 6 + 3 + 7 + 2).
It is an unprimeable number.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1115053 + ... + 1115124.
Almost surely, 280286372 is an apocalyptic number.
It is an amenable number.
80286372 is an abundant number, since it is smaller than the sum of its proper divisors (122659826).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
80286372 is a wasteful number, since it uses less digits than its factorization.
80286372 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2230187 (or 2230182 counting only the distinct ones).
The product of its (nonzero) digits is 32256, while the sum is 36.
The square root of 80286372 is about 8960.2662906858. The cubic root of 80286372 is about 431.4004672172.
It can be divided in two parts, 8028 and 6372, that added together give a square (14400 = 1202).
The spelling of 80286372 in words is "eighty million, two hundred eighty-six thousand, three hundred seventy-two".
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