Base | Representation |
---|---|
bin | 111001011000… |
… | …1010111111101 |
3 | 2002121120010111 |
4 | 1302301113331 |
5 | 30200233103 |
6 | 2552510021 |
7 | 513506122 |
oct | 162612775 |
9 | 62546114 |
10 | 30086653 |
11 | 15a8a603 |
12 | a0ab311 |
13 | 630556c |
14 | 3dd2749 |
15 | 299486d |
hex | 1cb15fd |
30086653 has 4 divisors (see below), whose sum is σ = 30136348. Its totient is φ = 30036960.
The previous prime is 30086521. The next prime is 30086657. The reversal of 30086653 is 35668003.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35668003 = 7 ⋅5095429.
It can be written as a sum of positive squares in 2 ways, for example, as 5116644 + 24970009 = 2262^2 + 4997^2 .
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-30086653 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 (30086657) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23928 + ... + 25153.
It is an arithmetic number, because the mean of its divisors is an integer number (7534087).
Almost surely, 230086653 is an apocalyptic number.
It is an amenable number.
30086653 is a deficient number, since it is larger than the sum of its proper divisors (49695).
30086653 is an equidigital number, since it uses as much as digits as its factorization.
30086653 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 49694.
The product of its (nonzero) digits is 12960, while the sum is 31.
The square root of 30086653 is about 5485.1301716550. The cubic root of 30086653 is about 311.0221308128.
The spelling of 30086653 in words is "thirty million, eighty-six thousand, six hundred fifty-three".
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