Base | Representation |
---|---|
bin | 1010011001011… |
… | …00101111110000 |
3 | 20002002222121110 |
4 | 11030230233300 |
5 | 134311340323 |
6 | 12353153320 |
7 | 2106213252 |
oct | 514545760 |
9 | 202088543 |
10 | 87215088 |
11 | 45259a94 |
12 | 2525b840 |
13 | 150b847c |
14 | b823cd2 |
15 | 79cb793 |
hex | 532cbf0 |
87215088 has 40 divisors (see below), whose sum is σ = 225641808. Its totient is φ = 29028352.
The previous prime is 87215081. The next prime is 87215099. The reversal of 87215088 is 88051278.
It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (87215081) 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, 57670 + ... + 59162.
Almost surely, 287215088 is an apocalyptic number.
It is an amenable number.
87215088 is an abundant number, since it is smaller than the sum of its proper divisors (138426720).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
87215088 is a wasteful number, since it uses less digits than its factorization.
87215088 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2721 (or 2715 counting only the distinct ones).
The product of its (nonzero) digits is 35840, while the sum is 39.
The square root of 87215088 is about 9338.9018626389. The cubic root of 87215088 is about 443.4696207266.
The spelling of 87215088 in words is "eighty-seven million, two hundred fifteen thousand, eighty-eight".
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