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12320230 = 251394771
BaseRepresentation
bin101110111111…
…110111100110
3212011221011211
4232333313212
511123221410
61120022034
7206502016
oct56776746
925157154
1012320230
116a5540a
12416191a
1327249a0
1418c9c46
15113568a
hexbbfde6

12320230 has 16 divisors (see below), whose sum is σ = 23882544. Its totient is φ = 4548960.

The previous prime is 12320219. The next prime is 12320239. The reversal of 12320230 is 3202321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 12320230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12320239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47256 + ... + 47515.

It is an arithmetic number, because the mean of its divisors is an integer number (1492659).

Almost surely, 212320230 is an apocalyptic number.

12320230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12320230 is a deficient number, since it is larger than the sum of its proper divisors (11562314).

12320230 is a wasteful number, since it uses less digits than its factorization.

12320230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94791.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 12320230 is about 3510.0185184697. The cubic root of 12320230 is about 230.9615073009.

Adding to 12320230 its reverse (3202321), we get a palindrome (15522551).

The spelling of 12320230 in words is "twelve million, three hundred twenty thousand, two hundred thirty".

Divisors: 1 2 5 10 13 26 65 130 94771 189542 473855 947710 1232023 2464046 6160115 12320230