Base | Representation |
---|---|
bin | 1111111111101… |
… | …0101101110000 |
3 | 11200020101100201 |
4 | 3333322231300 |
5 | 114133242331 |
6 | 10353524544 |
7 | 1443142360 |
oct | 377725560 |
9 | 150211321 |
10 | 67087216 |
11 | 34961689 |
12 | 1a573754 |
13 | 10b8baa1 |
14 | 8ca49a0 |
15 | 5d52a61 |
hex | 3ffab70 |
67087216 has 40 divisors (see below), whose sum is σ = 152574560. Its totient is φ = 27972864.
The previous prime is 67087201. The next prime is 67087217. The reversal of 67087216 is 61278076.
It is a happy number.
It is a Harshad number since it is a multiple of its sum of digits (37).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (67087217) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3951 + ... + 12238.
It is an arithmetic number, because the mean of its divisors is an integer number (3814364).
Almost surely, 267087216 is an apocalyptic number.
It is an amenable number.
67087216 is an abundant number, since it is smaller than the sum of its proper divisors (85487344).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
67087216 is a wasteful number, since it uses less digits than its factorization.
67087216 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 16241 (or 16235 counting only the distinct ones).
The product of its (nonzero) digits is 28224, while the sum is 37.
The square root of 67087216 is about 8190.6786043648. The cubic root of 67087216 is about 406.3309684452.
It can be divided in two parts, 6708 and 7216, that added together give a square (13924 = 1182).
The spelling of 67087216 in words is "sixty-seven million, eighty-seven thousand, two hundred sixteen".
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