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1230530 = 25717579
BaseRepresentation
bin100101100011011000010
32022111222012
410230123002
5303334110
642212522
713313360
oct4543302
92274865
101230530
11770574
124b4142
13341132
14240630
15194905
hex12c6c2

1230530 has 16 divisors (see below), whose sum is σ = 2531520. Its totient is φ = 421872.

The previous prime is 1230529. The next prime is 1230539. The reversal of 1230530 is 350321.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (1230539) 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, 8720 + ... + 8859.

It is an arithmetic number, because the mean of its divisors is an integer number (158220).

21230530 is an apocalyptic number.

1230530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1230530 is an abundant number, since it is smaller than the sum of its proper divisors (1300990).

1230530 is a wasteful number, since it uses less digits than its factorization.

1230530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17593.

The product of its (nonzero) digits is 90, while the sum is 14.

The square root of 1230530 is about 1109.2925673599. The cubic root of 1230530 is about 107.1595140241.

Adding to 1230530 its reverse (350321), we get a palindrome (1580851).

The spelling of 1230530 in words is "one million, two hundred thirty thousand, five hundred thirty".

Divisors: 1 2 5 7 10 14 35 70 17579 35158 87895 123053 175790 246106 615265 1230530