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30143674 = 2117871741
BaseRepresentation
bin111001011111…
…1010010111010
32002201110100101
41302333102322
530204044144
62554030014
7514134301
oct162772272
962643311
1030143674
1116019430
12a11830a
1363254c2
144009438
1529a66d4
hex1cbf4ba

30143674 has 16 divisors (see below), whose sum is σ = 49417056. Its totient is φ = 13676400.

The previous prime is 30143653. The next prime is 30143723. The reversal of 30143674 is 47634103.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16444 + ... + 18184.

It is an arithmetic number, because the mean of its divisors is an integer number (3088566).

Almost surely, 230143674 is an apocalyptic number.

30143674 is a deficient number, since it is larger than the sum of its proper divisors (19273382).

30143674 is a wasteful number, since it uses less digits than its factorization.

30143674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2541.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 30143674 is about 5490.3254912619. The cubic root of 30143674 is about 311.2184925338.

Adding to 30143674 its reverse (47634103), we get a palindrome (77777777).

The spelling of 30143674 in words is "thirty million, one hundred forty-three thousand, six hundred seventy-four".

Divisors: 1 2 11 22 787 1574 1741 3482 8657 17314 19151 38302 1370167 2740334 15071837 30143674