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1229080 = 23530727
BaseRepresentation
bin100101100000100011000
32022102222111
410230010120
5303312310
642202104
713306216
oct4540430
92272874
101229080
1176a476
124b3334
13340588
1423dcb6
1519428a
hex12c118

1229080 has 16 divisors (see below), whose sum is σ = 2765520. Its totient is φ = 491616.

The previous prime is 1229077. The next prime is 1229093. The reversal of 1229080 is 809221.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15324 + ... + 15403.

It is an arithmetic number, because the mean of its divisors is an integer number (172845).

21229080 is an apocalyptic number.

1229080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1229080 is an abundant number, since it is smaller than the sum of its proper divisors (1536440).

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

1229080 is a wasteful number, since it uses less digits than its factorization.

1229080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30738 (or 30734 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 1229080 is about 1108.6388050217. The cubic root of 1229080 is about 107.1174068652.

It can be divided in two parts, 12 and 29080, that added together give a palindrome (29092).

The spelling of 1229080 in words is "one million, two hundred twenty-nine thousand, eighty".

Divisors: 1 2 4 5 8 10 20 40 30727 61454 122908 153635 245816 307270 614540 1229080