Base | Representation |
---|---|
bin | 111010101010… |
… | …0011010011001 |
3 | 2010212111011222 |
4 | 1311110122121 |
5 | 30333120312 |
6 | 3015101425 |
7 | 522260066 |
oct | 165243231 |
9 | 63774158 |
10 | 30754457 |
11 | 163a6308 |
12 | a371875 |
13 | 64aa506 |
14 | 4127c6d |
15 | 2a77672 |
hex | 1d54699 |
30754457 has 4 divisors (see below), whose sum is σ = 30806400. Its totient is φ = 30702516.
The previous prime is 30754433. The next prime is 30754487. The reversal of 30754457 is 75445703.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75445703 = 149 ⋅506347.
It is a cyclic number.
It is not a de Polignac number, because 30754457 - 210 = 30753433 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (30754487) 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 3 ways as a sum of consecutive naturals, for example, 25073 + ... + 26270.
It is an arithmetic number, because the mean of its divisors is an integer number (7701600).
Almost surely, 230754457 is an apocalyptic number.
It is an amenable number.
30754457 is a deficient number, since it is larger than the sum of its proper divisors (51943).
30754457 is an equidigital number, since it uses as much as digits as its factorization.
30754457 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 51942.
The product of its (nonzero) digits is 58800, while the sum is 35.
The square root of 30754457 is about 5545.6701127997. The cubic root of 30754457 is about 313.3064635426.
The spelling of 30754457 in words is "thirty million, seven hundred fifty-four thousand, four hundred fifty-seven".
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