Base | Representation |
---|---|
bin | 1010011010101… |
… | …01100000001111 |
3 | 20002102110121112 |
4 | 11031111200033 |
5 | 134332211111 |
6 | 12400522235 |
7 | 2110510052 |
oct | 515254017 |
9 | 202373545 |
10 | 87382031 |
11 | 45363460 |
12 | 2532037b |
13 | 15146459 |
14 | b868a99 |
15 | 7a10e8b |
hex | 535580f |
87382031 has 8 divisors (see below), whose sum is σ = 95558400. Its totient is φ = 79244440.
The previous prime is 87381997. The next prime is 87382033. The reversal of 87382031 is 13028378.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 87382031 - 214 = 87365647 is a prime.
It is a super-2 number, since 2×873820312 = 15271238683369922, which contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (87382033) by changing a digit.
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 7 ways as a sum of consecutive naturals, for example, 4871 + ... + 14088.
It is an arithmetic number, because the mean of its divisors is an integer number (11944800).
Almost surely, 287382031 is an apocalyptic number.
87382031 is a deficient number, since it is larger than the sum of its proper divisors (8176369).
87382031 is a wasteful number, since it uses less digits than its factorization.
87382031 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 19389.
The product of its (nonzero) digits is 8064, while the sum is 32.
The square root of 87382031 is about 9347.8356318455. The cubic root of 87382031 is about 443.7523965750.
The spelling of 87382031 in words is "eighty-seven million, three hundred eighty-two thousand, thirty-one".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.069 sec. • engine limits •