Base | Representation |
---|---|
bin | 11111100100010100010101 |
3 | 120120102110200 |
4 | 133210110111 |
5 | 4104301341 |
6 | 453211113 |
7 | 130224003 |
oct | 37442425 |
9 | 16512420 |
10 | 8275221 |
11 | 4742329 |
12 | 2930a99 |
13 | 19397a6 |
14 | 1155a73 |
15 | ad6db6 |
hex | 7e4515 |
8275221 has 12 divisors (see below), whose sum is σ = 12231648. Its totient is φ = 5388264.
The previous prime is 8275213. The next prime is 8275229. The reversal of 8275221 is 1225728.
It is an interprime number because it is at equal distance from previous prime (8275213) and next prime (8275229).
It is not a de Polignac number, because 8275221 - 23 = 8275213 is a prime.
It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (8275229) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10305 + ... + 11078.
It is an arithmetic number, because the mean of its divisors is an integer number (1019304).
Almost surely, 28275221 is an apocalyptic number.
It is an amenable number.
8275221 is a deficient number, since it is larger than the sum of its proper divisors (3956427).
8275221 is a wasteful number, since it uses less digits than its factorization.
8275221 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 21432 (or 21429 counting only the distinct ones).
The product of its digits is 2240, while the sum is 27.
The square root of 8275221 is about 2876.6683854765. The cubic root of 8275221 is about 202.2676988631.
The spelling of 8275221 in words is "eight million, two hundred seventy-five thousand, two hundred twenty-one".
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