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30002345 = 58967421
BaseRepresentation
bin111001001110…
…0110010101001
32002110021110222
41302130302221
530140033340
62551015425
7513005252
oct162346251
962407428
1030002345
1115a3222a
12a06a575
1362a6089
143dadb29
1529798b5
hex1c9cca9

30002345 has 8 divisors (see below), whose sum is σ = 36407880. Its totient is φ = 23731840.

The previous prime is 30002333. The next prime is 30002351. The reversal of 30002345 is 54320003.

It can be written as a sum of positive squares in 4 ways, for example, as 1315609 + 28686736 = 1147^2 + 5356^2 .

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

It is a de Polignac number, because none of the positive numbers 2k-30002345 is a prime.

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 33266 + ... + 34155.

It is an arithmetic number, because the mean of its divisors is an integer number (4550985).

Almost surely, 230002345 is an apocalyptic number.

It is an amenable number.

30002345 is a deficient number, since it is larger than the sum of its proper divisors (6405535).

30002345 is an equidigital number, since it uses as much as digits as its factorization.

30002345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67515.

The product of its (nonzero) digits is 360, while the sum is 17.

The square root of 30002345 is about 5477.4396391015. The cubic root of 30002345 is about 310.7313464514.

Adding to 30002345 its reverse (54320003), we get a palindrome (84322348).

The spelling of 30002345 in words is "thirty million, two thousand, three hundred forty-five".

Divisors: 1 5 89 445 67421 337105 6000469 30002345