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30143332 = 229777689
BaseRepresentation
bin111001011111…
…1001101100100
32002201102212201
41302333031210
530204041312
62554024244
7514133302
oct162771544
962642781
1030143332
111601914a
12a118084
1363252bb
144009272
1529a6557
hex1cbf364

30143332 has 12 divisors (see below), whose sum is σ = 53295340. Its totient is φ = 14916096.

The previous prime is 30143327. The next prime is 30143339. The reversal of 30143332 is 23334103.

It can be written as a sum of positive squares in 2 ways, for example, as 17355556 + 12787776 = 4166^2 + 3576^2 .

It is not an unprimeable number, because it can be changed into a prime (30143339) 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, 38457 + ... + 39232.

Almost surely, 230143332 is an apocalyptic number.

It is an amenable number.

30143332 is a deficient number, since it is larger than the sum of its proper divisors (23152008).

30143332 is a wasteful number, since it uses less digits than its factorization.

30143332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77790 (or 77788 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 30143332 is about 5490.2943454791. The cubic root of 30143332 is about 311.2173155359.

Adding to 30143332 its reverse (23334103), we get a palindrome (53477435).

The spelling of 30143332 in words is "thirty million, one hundred forty-three thousand, three hundred thirty-two".

Divisors: 1 2 4 97 194 388 77689 155378 310756 7535833 15071666 30143332