Base | Representation |
---|---|
bin | 1010011011001… |
… | …00101000101100 |
3 | 20002112121122010 |
4 | 11031210220230 |
5 | 134341202022 |
6 | 12402121220 |
7 | 2111155545 |
oct | 515445054 |
9 | 202477563 |
10 | 87444012 |
11 | 453a5a87 |
12 | 25350210 |
13 | 15168726 |
14 | b8834cc |
15 | 7a2450c |
hex | 5364a2c |
87444012 has 12 divisors (see below), whose sum is σ = 204036056. Its totient is φ = 29148000.
The previous prime is 87443981. The next prime is 87444029. The reversal of 87444012 is 21044478.
It is a tau number, because it is divible by the number of its divisors (12).
It is a super-2 number, since 2×874440122 = 15292910469312288, which contains 22 as substring.
It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.
It is an unprimeable number.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3643489 + ... + 3643512.
Almost surely, 287444012 is an apocalyptic number.
It is an amenable number.
87444012 is an abundant number, since it is smaller than the sum of its proper divisors (116592044).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
87444012 is a wasteful number, since it uses less digits than its factorization.
87444012 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 7287008 (or 7287006 counting only the distinct ones).
The product of its (nonzero) digits is 7168, while the sum is 30.
The square root of 87444012 is about 9351.1503035723. The cubic root of 87444012 is about 443.8572912028.
The spelling of 87444012 in words is "eighty-seven million, four hundred forty-four thousand, twelve".
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