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530115220 = 22526505761
BaseRepresentation
bin11111100110001…
…110101010010100
31100221111122101001
4133212032222110
52041202141340
6124334113044
716064622265
oct3746165224
91327448331
10530115220
11252266458
1212964b784
1385a9a65b
145059496c
153181629a
hex1f98ea94

530115220 has 12 divisors (see below), whose sum is σ = 1113242004. Its totient is φ = 212046080.

The previous prime is 530115217. The next prime is 530115251. The reversal of 530115220 is 22511035.

It can be written as a sum of positive squares in 2 ways, for example, as 109537156 + 420578064 = 10466^2 + 20508^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13252861 + ... + 13252900.

It is an arithmetic number, because the mean of its divisors is an integer number (92770167).

Almost surely, 2530115220 is an apocalyptic number.

It is an amenable number.

530115220 is an abundant number, since it is smaller than the sum of its proper divisors (583126784).

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

530115220 is a wasteful number, since it uses less digits than its factorization.

530115220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26505770 (or 26505768 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 530115220 is about 23024.2311489439. The cubic root of 530115220 is about 809.3258730884.

Adding to 530115220 its reverse (22511035), we get a palindrome (552626255).

The spelling of 530115220 in words is "five hundred thirty million, one hundred fifteen thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 26505761 53011522 106023044 132528805 265057610 530115220