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30608065 = 537165449
BaseRepresentation
bin111010011000…
…0101011000001
32010121001101001
41310300223001
530313424230
63012012001
7521110225
oct164605301
963531331
1030608065
1116306324
12a301001
1364589a7
1440ca785
152a490ca
hex1d30ac1

30608065 has 8 divisors (see below), whose sum is σ = 37722600. Its totient is φ = 23824512.

The previous prime is 30608057. The next prime is 30608089. The reversal of 30608065 is 56080603.

It can be written as a sum of positive squares in 4 ways, for example, as 3139984 + 27468081 = 1772^2 + 5241^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 30608065 - 23 = 30608057 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82540 + ... + 82909.

It is an arithmetic number, because the mean of its divisors is an integer number (4715325).

Almost surely, 230608065 is an apocalyptic number.

It is an amenable number.

30608065 is a deficient number, since it is larger than the sum of its proper divisors (7114535).

30608065 is a wasteful number, since it uses less digits than its factorization.

30608065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165491.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 30608065 is about 5532.4556030754. The cubic root of 30608065 is about 312.8085571024.

Adding to 30608065 its reverse (56080603), we get a palindrome (86688668).

The spelling of 30608065 in words is "thirty million, six hundred eight thousand, sixty-five".

Divisors: 1 5 37 185 165449 827245 6121613 30608065