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1223856 = 24332833
BaseRepresentation
bin100101010110010110000
32022011211000
410222302300
5303130411
642122000
713255044
oct4526260
92264730
101223856
11766557
124b0300
1333b09a
1423c024
15192956
hex12acb0

1223856 has 40 divisors (see below), whose sum is σ = 3514160. Its totient is φ = 407808.

The previous prime is 1223777. The next prime is 1223857. The reversal of 1223856 is 6583221.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1223857) 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, 985 + ... + 1848.

It is an arithmetic number, because the mean of its divisors is an integer number (87854).

21223856 is an apocalyptic number.

1223856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1223856 is an abundant number, since it is smaller than the sum of its proper divisors (2290304).

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

1223856 is a wasteful number, since it uses less digits than its factorization.

1223856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2850 (or 2838 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 1223856 is about 1106.2802538236. The cubic root of 1223856 is about 106.9654297730.

The spelling of 1223856 in words is "one million, two hundred twenty-three thousand, eight hundred fifty-six".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 27 36 48 54 72 108 144 216 432 2833 5666 8499 11332 16998 22664 25497 33996 45328 50994 67992 76491 101988 135984 152982 203976 305964 407952 611928 1223856