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30230866 = 215115433
BaseRepresentation
bin111001101010…
…0100101010010
32002212212221201
41303110211102
530214341431
62555541414
7514646431
oct163244522
962785851
1030230866
1116078996
12a15a86a
1363560b3
14402d118
1529c2461
hex1cd4952

30230866 has 4 divisors (see below), whose sum is σ = 45346302. Its totient is φ = 15115432.

The previous prime is 30230839. The next prime is 30230873. The reversal of 30230866 is 66803203.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66803203 = 107624329.

It can be written as a sum of positive squares in only one way, i.e., 23804641 + 6426225 = 4879^2 + 2535^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7557715 + ... + 7557718.

Almost surely, 230230866 is an apocalyptic number.

30230866 is a deficient number, since it is larger than the sum of its proper divisors (15115436).

30230866 is a wasteful number, since it uses less digits than its factorization.

30230866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15115435.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 30230866 is about 5498.2602703037. The cubic root of 30230866 is about 311.5182750680.

The spelling of 30230866 in words is "thirty million, two hundred thirty thousand, eight hundred sixty-six".

Divisors: 1 2 15115433 30230866