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30068618 = 215034309
BaseRepresentation
bin111001010110…
…0111110001010
32002120122101112
41302230332022
530144143433
62552250322
7513402416
oct162547612
962518345
1030068618
1115a77aa8
12a0a09a2
1362ca2a8
143dc9d46
15298e348
hex1cacf8a

30068618 has 4 divisors (see below), whose sum is σ = 45102930. Its totient is φ = 15034308.

The previous prime is 30068593. The next prime is 30068629. The reversal of 30068618 is 81686003.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 30063289 + 5329 = 5483^2 + 73^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7517153 + ... + 7517156.

Almost surely, 230068618 is an apocalyptic number.

30068618 is a deficient number, since it is larger than the sum of its proper divisors (15034312).

30068618 is a wasteful number, since it uses less digits than its factorization.

30068618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15034311.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 30068618 is about 5483.4859350599. The cubic root of 30068618 is about 310.9599725162.

The spelling of 30068618 in words is "thirty million, sixty-eight thousand, six hundred eighteen".

Divisors: 1 2 15034309 30068618