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30069668 = 2217442201
BaseRepresentation
bin111001010110…
…1001110100100
32002120200211102
41302231032210
530144212133
62552255232
7513405446
oct162551644
962520742
1030069668
1115a78872
12a0a1518
1362ca905
143dca496
15298e7e8
hex1cad3a4

30069668 has 12 divisors (see below), whose sum is σ = 55717452. Its totient is φ = 14150400.

The previous prime is 30069661. The next prime is 30069679. The reversal of 30069668 is 86696003.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18386944 + 11682724 = 4288^2 + 3418^2 .

It is not an unprimeable number, because it can be changed into a prime (30069661) 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, 221033 + ... + 221168.

It is an arithmetic number, because the mean of its divisors is an integer number (4643121).

Almost surely, 230069668 is an apocalyptic number.

It is an amenable number.

30069668 is a deficient number, since it is larger than the sum of its proper divisors (25647784).

30069668 is a wasteful number, since it uses less digits than its factorization.

30069668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442222 (or 442220 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 30069668 is about 5483.5816762404. The cubic root of 30069668 is about 310.9635920614.

The spelling of 30069668 in words is "thirty million, sixty-nine thousand, six hundred sixty-eight".

Divisors: 1 2 4 17 34 68 442201 884402 1768804 7517417 15034834 30069668