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30660230 = 2516931811
BaseRepresentation
bin111010011110…
…1011010000110
32010200200221002
41310331122012
530322111410
63013053302
7521415266
oct164753206
963620832
1030660230
1116341537
12a327232
136476663
1441017a6
152a597a5
hex1d3d686

30660230 has 16 divisors (see below), whose sum is σ = 55251504. Its totient is φ = 12250080.

The previous prime is 30660229. The next prime is 30660239. The reversal of 30660230 is 3206603.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30660239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16025 + ... + 17835.

It is an arithmetic number, because the mean of its divisors is an integer number (3453219).

Almost surely, 230660230 is an apocalyptic number.

30660230 is a deficient number, since it is larger than the sum of its proper divisors (24591274).

30660230 is a wasteful number, since it uses less digits than its factorization.

30660230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3511.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 30660230 is about 5537.1680487412. The cubic root of 30660230 is about 312.9861616776.

Adding to 30660230 its reverse (3206603), we get a palindrome (33866833).

The spelling of 30660230 in words is "thirty million, six hundred sixty thousand, two hundred thirty".

Divisors: 1 2 5 10 1693 1811 3386 3622 8465 9055 16930 18110 3066023 6132046 15330115 30660230