Base | Representation |
---|---|
bin | 1010011010111… |
… | …01101001101001 |
3 | 20002111011101110 |
4 | 11031131221221 |
5 | 134334243101 |
6 | 12401340533 |
7 | 2111006253 |
oct | 515355151 |
9 | 202434343 |
10 | 87415401 |
11 | 45386537 |
12 | 25337749 |
13 | 151586b8 |
14 | b876cd3 |
15 | 7a1acd6 |
hex | 535da69 |
87415401 has 16 divisors (see below), whose sum is σ = 117868608. Its totient is φ = 57624000.
The previous prime is 87415373. The next prime is 87415421. The reversal of 87415401 is 10451478.
It is not a de Polignac number, because 87415401 - 219 = 86891113 is a prime.
It is not an unprimeable number, because it can be changed into a prime (87415421) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124351 + ... + 125051.
It is an arithmetic number, because the mean of its divisors is an integer number (7366788).
Almost surely, 287415401 is an apocalyptic number.
It is an amenable number.
87415401 is a deficient number, since it is larger than the sum of its proper divisors (30453207).
87415401 is a wasteful number, since it uses less digits than its factorization.
87415401 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1112.
The product of its (nonzero) digits is 4480, while the sum is 30.
The square root of 87415401 is about 9349.6203666245. The cubic root of 87415401 is about 443.8088770387.
Adding to 87415401 its reverse (10451478), we get a palindrome (97866879).
The spelling of 87415401 in words is "eighty-seven million, four hundred fifteen thousand, four hundred one".
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