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1220012 = 222389149
BaseRepresentation
bin100101001110110101100
32021222112122
410221312230
5303020022
642052112
713240613
oct4516654
92258478
101220012
11763682
124aa038
13339401
1423a87a
15191742
hex129dac

1220012 has 24 divisors (see below), whose sum is σ = 2268000. Its totient is φ = 573056.

The previous prime is 1219991. The next prime is 1220027. The reversal of 1220012 is 2100221.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8114 + ... + 8262.

It is an arithmetic number, because the mean of its divisors is an integer number (94500).

21220012 is an apocalyptic number.

It is an amenable number.

1220012 is a deficient number, since it is larger than the sum of its proper divisors (1047988).

1220012 is a wasteful number, since it uses less digits than its factorization.

1220012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265 (or 263 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 1220012 is about 1104.5415338501. The cubic root of 1220012 is about 106.8533233514.

Adding to 1220012 its reverse (2100221), we get a palindrome (3320233).

The spelling of 1220012 in words is "one million, two hundred twenty thousand, twelve".

Divisors: 1 2 4 23 46 89 92 149 178 298 356 596 2047 3427 4094 6854 8188 13261 13708 26522 53044 305003 610006 1220012