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3130220 = 225156511
BaseRepresentation
bin1011111100001101101100
312220000212002
423330031230
51300131340
6151031432
735415002
oct13741554
95800762
103130220
111848865
12106b578
13857a02
145b6a72
1541c715
hex2fc36c

3130220 has 12 divisors (see below), whose sum is σ = 6573504. Its totient is φ = 1252080.

The previous prime is 3130207. The next prime is 3130229. The reversal of 3130220 is 220313.

It is not an unprimeable number, because it can be changed into a prime (3130229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78236 + ... + 78275.

It is an arithmetic number, because the mean of its divisors is an integer number (547792).

Almost surely, 23130220 is an apocalyptic number.

It is an amenable number.

3130220 is an abundant number, since it is smaller than the sum of its proper divisors (3443284).

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

3130220 is a wasteful number, since it uses less digits than its factorization.

3130220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156520 (or 156518 counting only the distinct ones).

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

The square root of 3130220 is about 1769.2427758790. The cubic root of 3130220 is about 146.2822462804.

Adding to 3130220 its reverse (220313), we get a palindrome (3350533).

The spelling of 3130220 in words is "three million, one hundred thirty thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 156511 313022 626044 782555 1565110 3130220