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1220322 = 23203387
BaseRepresentation
bin100101001111011100010
32021222222010
410221323202
5303022242
642053350
713241535
oct4517342
92258863
101220322
11763934
124aa256
133395ac
1423aa1c
1519189c
hex129ee2

1220322 has 8 divisors (see below), whose sum is σ = 2440656. Its totient is φ = 406772.

The previous prime is 1220309. The next prime is 1220327. The reversal of 1220322 is 2230221.

It is a sphenic number, since it is the product of 3 distinct primes.

1220322 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 1220298 and 1220307.

It is not an unprimeable number, because it can be changed into a prime (1220327) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 101688 + ... + 101699.

It is an arithmetic number, because the mean of its divisors is an integer number (305082).

21220322 is an apocalyptic number.

1220322 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1220322 is a wasteful number, since it uses less digits than its factorization.

1220322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203392.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 1220322 is about 1104.6818546532. The cubic root of 1220322 is about 106.8623729140.

Adding to 1220322 its reverse (2230221), we get a palindrome (3450543).

The spelling of 1220322 in words is "one million, two hundred twenty thousand, three hundred twenty-two".

Divisors: 1 2 3 6 203387 406774 610161 1220322