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3230331220 = 2251371178953
BaseRepresentation
bin1100000010001010…
…1111000101010100
322100010102211101001
43000202233011110
523103431044340
61252313113044
7143023235164
oct30042570524
98303384331
103230331220
11140848a726
127619b8784
133c632b4bc
142290425a4
1513d8e029a
hexc08af154

3230331220 has 24 divisors (see below), whose sum is σ = 6833217384. Its totient is φ = 1282699776.

The previous prime is 3230331191. The next prime is 3230331241. The reversal of 3230331220 is 221330323.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 324 + 3230330896 = 18^2 + 56836^2 .

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 586737 + ... + 592216.

It is an arithmetic number, because the mean of its divisors is an integer number (284717391).

Almost surely, 23230331220 is an apocalyptic number.

It is an amenable number.

3230331220 is an abundant number, since it is smaller than the sum of its proper divisors (3602886164).

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

3230331220 is a wasteful number, since it uses less digits than its factorization.

3230331220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1179099 (or 1179097 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 3230331220 is about 56836.0028503061. The cubic root of 3230331220 is about 1478.2538482408.

Adding to 3230331220 its reverse (221330323), we get a palindrome (3451661543).

The spelling of 3230331220 in words is "three billion, two hundred thirty million, three hundred thirty-one thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 137 274 548 685 1370 2740 1178953 2357906 4715812 5894765 11789530 23579060 161516561 323033122 646066244 807582805 1615165610 3230331220