Base | Representation |
---|---|
bin | 1010011110111… |
… | …01010011001000 |
3 | 20010110201121011 |
4 | 11033131103020 |
5 | 140003010443 |
6 | 12420453304 |
7 | 2115314506 |
oct | 517352310 |
9 | 203421534 |
10 | 87938248 |
11 | 45703342 |
12 | 2554a234 |
13 | 152ac688 |
14 | b971676 |
15 | 7ac0b9d |
hex | 53dd4c8 |
87938248 has 8 divisors (see below), whose sum is σ = 164884230. Its totient is φ = 43969120.
The previous prime is 87938243. The next prime is 87938267. The reversal of 87938248 is 84283978.
It can be written as a sum of positive squares in only one way, i.e., 78464164 + 9474084 = 8858^2 + 3078^2 .
It is a tau number, because it is divible by the number of its divisors (8).
It is a super-2 number, since 2×879382482 = 15466270922619008, which contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (87938243) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5496133 + ... + 5496148.
Almost surely, 287938248 is an apocalyptic number.
It is an amenable number.
87938248 is a deficient number, since it is larger than the sum of its proper divisors (76945982).
87938248 is a wasteful number, since it uses less digits than its factorization.
87938248 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 10992287 (or 10992283 counting only the distinct ones).
The product of its digits is 774144, while the sum is 49.
The square root of 87938248 is about 9377.5395493701. The cubic root of 87938248 is about 444.6919519358.
The spelling of 87938248 in words is "eighty-seven million, nine hundred thirty-eight thousand, two hundred forty-eight".
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