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30065146 = 217884269
BaseRepresentation
bin111001010110…
…0000111111010
32002120110121221
41302230013322
530144041041
62552222254
7513356326
oct162540772
962513557
1030065146
1115a75431
12a09a98a
1362c8837
143dc8986
15298d2d1
hex1cac1fa

30065146 has 8 divisors (see below), whose sum is σ = 47750580. Its totient is φ = 14148288.

The previous prime is 30065137. The next prime is 30065149. The reversal of 30065146 is 64156003.

It can be written as a sum of positive squares in 2 ways, for example, as 27678121 + 2387025 = 5261^2 + 1545^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 30065146.

It is not an unprimeable number, because it can be changed into a prime (30065149) 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, 442101 + ... + 442168.

Almost surely, 230065146 is an apocalyptic number.

30065146 is a deficient number, since it is larger than the sum of its proper divisors (17685434).

30065146 is a wasteful number, since it uses less digits than its factorization.

30065146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884288.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 30065146 is about 5483.1693389863. The cubic root of 30065146 is about 310.9480032865.

The spelling of 30065146 in words is "thirty million, sixty-five thousand, one hundred forty-six".

Divisors: 1 2 17 34 884269 1768538 15032573 30065146