Base | Representation |
---|---|
bin | 1010011110101… |
… | …00000011110111 |
3 | 20010101210200122 |
4 | 11033110003313 |
5 | 140000303112 |
6 | 12420002155 |
7 | 2115066260 |
oct | 517240367 |
9 | 203353618 |
10 | 87900407 |
11 | 45687971 |
12 | 2553035b |
13 | 1529839a |
14 | b961967 |
15 | 7ab4872 |
hex | 53d40f7 |
87900407 has 8 divisors (see below), whose sum is σ = 103698432. Its totient is φ = 72912600.
The previous prime is 87900389. The next prime is 87900409. The reversal of 87900407 is 70400978.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 87900407 - 214 = 87884023 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (87900409) 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, 202319 + ... + 202752.
It is an arithmetic number, because the mean of its divisors is an integer number (12962304).
Almost surely, 287900407 is an apocalyptic number.
87900407 is a deficient number, since it is larger than the sum of its proper divisors (15798025).
87900407 is a wasteful number, since it uses less digits than its factorization.
87900407 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 405109.
The product of its (nonzero) digits is 14112, while the sum is 35.
The square root of 87900407 is about 9375.5216921513. The cubic root of 87900407 is about 444.6281571600.
The spelling of 87900407 in words is "eighty-seven million, nine hundred thousand, four hundred seven".
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