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30130220 = 2251506511
BaseRepresentation
bin111001011110…
…0000000101100
32002200202220002
41302330000230
530203131340
62553443432
7514050131
oct162740054
962622802
1030130220
111600a30a
12a110578
13631c343
144004588
1529a2715
hex1cbc02c

30130220 has 12 divisors (see below), whose sum is σ = 63273504. Its totient is φ = 12052080.

The previous prime is 30130213. The next prime is 30130231. The reversal of 30130220 is 2203103.

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 3 ways as a sum of consecutive naturals, for example, 753236 + ... + 753275.

It is an arithmetic number, because the mean of its divisors is an integer number (5272792).

Almost surely, 230130220 is an apocalyptic number.

It is an amenable number.

30130220 is an abundant number, since it is smaller than the sum of its proper divisors (33143284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30130220 is a wasteful number, since it uses less digits than its factorization.

30130220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1506520 (or 1506518 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 30130220 is about 5489.1001083966. The cubic root of 30130220 is about 311.1721836831.

Adding to 30130220 its reverse (2203103), we get a palindrome (32333323).

The spelling of 30130220 in words is "thirty million, one hundred thirty thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 1506511 3013022 6026044 7532555 15065110 30130220