Base | Representation |
---|---|
bin | 1010011011010… |
… | …00000011101110 |
3 | 20002120022212022 |
4 | 11031220003232 |
5 | 134342124110 |
6 | 12402310142 |
7 | 2111244452 |
oct | 515500356 |
9 | 202508768 |
10 | 87458030 |
11 | 45405570 |
12 | 25358352 |
13 | 15171c1a |
14 | b888662 |
15 | 7a28755 |
hex | 53680ee |
87458030 has 32 divisors (see below), whose sum is σ = 181841760. Its totient is φ = 29931520.
The previous prime is 87458017. The next prime is 87458051. The reversal of 87458030 is 3085478.
It is a super-2 number, since 2×874580302 = 15297814022961800, which contains 22 as substring.
It is a nialpdrome in base 14.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21515 + ... + 25254.
It is an arithmetic number, because the mean of its divisors is an integer number (5682555).
Almost surely, 287458030 is an apocalyptic number.
87458030 is an abundant number, since it is smaller than the sum of its proper divisors (94383730).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
87458030 is a wasteful number, since it uses less digits than its factorization.
87458030 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 46804.
The product of its (nonzero) digits is 26880, while the sum is 35.
The square root of 87458030 is about 9351.8998069911. The cubic root of 87458030 is about 443.8810079366.
The spelling of 87458030 in words is "eighty-seven million, four hundred fifty-eight thousand, thirty".
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