Base | Representation |
---|---|
bin | 11001101001000… |
… | …01110010101010 |
3 | 112222202000220200 |
4 | 30310201302222 |
5 | 420031041430 |
6 | 33202133030 |
7 | 5221201320 |
oct | 1464416252 |
9 | 488660820 |
10 | 215096490 |
11 | 1004641a4 |
12 | 60051176 |
13 | 3574183b |
14 | 207d1d10 |
15 | 13d3c460 |
hex | cd21caa |
215096490 has 48 divisors (see below), whose sum is σ = 639145728. Its totient is φ = 49164768.
The previous prime is 215096489. The next prime is 215096491. The reversal of 215096490 is 94690512.
215096490 is a `hidden beast` number, since 2 + 1 + 5 + 0 + 9 + 649 + 0 = 666.
It is an interprime number because it is at equal distance from previous prime (215096489) and next prime (215096491).
It is not an unprimeable number, because it can be changed into a prime (215096491) 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 23 ways as a sum of consecutive naturals, for example, 170082 + ... + 171341.
It is an arithmetic number, because the mean of its divisors is an integer number (13315536).
Almost surely, 2215096490 is an apocalyptic number.
215096490 is an abundant number, since it is smaller than the sum of its proper divisors (424049238).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
215096490 is a wasteful number, since it uses less digits than its factorization.
215096490 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 341443 (or 341440 counting only the distinct ones).
The product of its (nonzero) digits is 19440, while the sum is 36.
The square root of 215096490 is about 14666.1682112268. The cubic root of 215096490 is about 599.1622474956.
The spelling of 215096490 in words is "two hundred fifteen million, ninety-six thousand, four hundred ninety".
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