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30142210 = 257430603
BaseRepresentation
bin111001011111…
…0111100000010
32002201101100011
41302332330002
530204022320
62554015134
7514130110
oct162767402
962641304
1030142210
111601831a
12a1174aa
136324937
144008ab0
1529a605a
hex1cbef02

30142210 has 16 divisors (see below), whose sum is σ = 62006976. Its totient is φ = 10334448.

The previous prime is 30142201. The next prime is 30142237. The reversal of 30142210 is 1224103.

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, 215232 + ... + 215371.

It is an arithmetic number, because the mean of its divisors is an integer number (3875436).

Almost surely, 230142210 is an apocalyptic number.

30142210 is an abundant number, since it is smaller than the sum of its proper divisors (31864766).

30142210 is a wasteful number, since it uses less digits than its factorization.

30142210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430617.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 30142210 is about 5490.1921642143. The cubic root of 30142210 is about 311.2134540942.

Adding to 30142210 its reverse (1224103), we get a palindrome (31366313).

The spelling of 30142210 in words is "thirty million, one hundred forty-two thousand, two hundred ten".

Divisors: 1 2 5 7 10 14 35 70 430603 861206 2153015 3014221 4306030 6028442 15071105 30142210