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1223556 = 223101963
BaseRepresentation
bin100101010101110000100
32022011101220
410222232010
5303123211
642120340
713254135
oct4525604
92264356
101223556
11766304
124b00b0
1333abc9
1423bc8c
15192806
hex12ab84

1223556 has 12 divisors (see below), whose sum is σ = 2854992. Its totient is φ = 407848.

The previous prime is 1223549. The next prime is 1223561. The reversal of 1223556 is 6553221.

It is a tau number, because it is divible by the number of its divisors (12).

It is a plaindrome in base 10.

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, 50970 + ... + 50993.

It is an arithmetic number, because the mean of its divisors is an integer number (237916).

21223556 is an apocalyptic number.

It is an amenable number.

1223556 is an abundant number, since it is smaller than the sum of its proper divisors (1631436).

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

1223556 is a wasteful number, since it uses less digits than its factorization.

1223556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101970 (or 101968 counting only the distinct ones).

The product of its digits is 1800, while the sum is 24.

The square root of 1223556 is about 1106.1446560012. The cubic root of 1223556 is about 106.9566890248.

Adding to 1223556 its reverse (6553221), we get a palindrome (7776777).

The spelling of 1223556 in words is "one million, two hundred twenty-three thousand, five hundred fifty-six".

Divisors: 1 2 3 4 6 12 101963 203926 305889 407852 611778 1223556