Base | Representation |
---|---|
bin | 1010011000101… |
… | …10110110001001 |
3 | 20001221102120010 |
4 | 11030112312021 |
5 | 134301003020 |
6 | 12351222133 |
7 | 2105360604 |
oct | 514266611 |
9 | 201842503 |
10 | 87125385 |
11 | 451a8656 |
12 | 25217949 |
13 | 150866a9 |
14 | b7dd33b |
15 | 79aede0 |
hex | 5316d89 |
87125385 has 16 divisors (see below), whose sum is σ = 141687360. Its totient is φ = 45704640.
The previous prime is 87125377. The next prime is 87125419. The reversal of 87125385 is 58352178.
It is not a de Polignac number, because 87125385 - 23 = 87125377 is a prime.
It is a super-2 number, since 2×871253852 = 15181665422796450, which contains 22 as substring.
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, 46695 + ... + 48524.
It is an arithmetic number, because the mean of its divisors is an integer number (8855460).
Almost surely, 287125385 is an apocalyptic number.
It is an amenable number.
87125385 is a deficient number, since it is larger than the sum of its proper divisors (54561975).
87125385 is a wasteful number, since it uses less digits than its factorization.
87125385 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 95288.
The product of its digits is 67200, while the sum is 39.
The square root of 87125385 is about 9334.0979746304. The cubic root of 87125385 is about 443.3175285350.
The spelling of 87125385 in words is "eighty-seven million, one hundred twenty-five thousand, three hundred eighty-five".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.069 sec. • engine limits •