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12330020 = 225616501
BaseRepresentation
bin101111000010…
…010000100100
3212012102121102
4233002100210
511124030040
61120135232
7206542403
oct57022044
925172542
1012330020
116a617aa
124167518
132729291
1418cd63a
151138515
hexbc2424

12330020 has 12 divisors (see below), whose sum is σ = 25893084. Its totient is φ = 4932000.

The previous prime is 12330011. The next prime is 12330023. The reversal of 12330020 is 2003321.

It can be written as a sum of positive squares in 2 ways, for example, as 8111104 + 4218916 = 2848^2 + 2054^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12329983 and 12330010.

It is not an unprimeable number, because it can be changed into a prime (12330023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 308231 + ... + 308270.

It is an arithmetic number, because the mean of its divisors is an integer number (2157757).

Almost surely, 212330020 is an apocalyptic number.

12330020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12330020 is an abundant number, since it is smaller than the sum of its proper divisors (13563064).

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

12330020 is a wasteful number, since it uses less digits than its factorization.

12330020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616510 (or 616508 counting only the distinct ones).

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

The square root of 12330020 is about 3511.4128210736. The cubic root of 12330020 is about 231.0226672659.

Adding to 12330020 its reverse (2003321), we get a palindrome (14333341).

The spelling of 12330020 in words is "twelve million, three hundred thirty thousand, twenty".

Divisors: 1 2 4 5 10 20 616501 1233002 2466004 3082505 6165010 12330020