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1442444223 = 311193797641
BaseRepresentation
bin101010111111001…
…1111001110111111
310201112012202111010
41111332133032333
510423231203343
6355044330303
750513400513
oct12576371677
93645182433
101442444223
11680249770
123430a3993
1319cabc9bc
14d9800143
158697ad33
hex55f9f3bf

1442444223 has 64 divisors (see below), whose sum is σ = 2295175680. Its totient is φ = 796262400.

The previous prime is 1442444221. The next prime is 1442444231. The reversal of 1442444223 is 3224442441.

It is not a de Polignac number, because 1442444223 - 21 = 1442444221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1442444221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2249983 + ... + 2250623.

It is an arithmetic number, because the mean of its divisors is an integer number (35862120).

Almost surely, 21442444223 is an apocalyptic number.

1442444223 is a deficient number, since it is larger than the sum of its proper divisors (852731457).

1442444223 is a wasteful number, since it uses less digits than its factorization.

1442444223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808.

The product of its digits is 24576, while the sum is 30.

The square root of 1442444223 is about 37979.5237331908. The cubic root of 1442444223 is about 1129.8817906993.

Adding to 1442444223 its reverse (3224442441), we get a palindrome (4666886664).

The spelling of 1442444223 in words is "one billion, four hundred forty-two million, four hundred forty-four thousand, two hundred twenty-three".

Divisors: 1 3 11 19 33 37 57 97 111 209 291 407 627 641 703 1067 1221 1843 1923 2109 3201 3589 5529 7051 7733 10767 12179 20273 21153 23199 23717 36537 39479 60819 62177 68191 71151 118437 133969 186531 204573 260887 401907 450623 683947 750101 782661 1181363 1351869 2051841 2250303 2300549 3544089 4956853 6901647 12994993 14870559 25306039 38984979 43710431 75918117 131131293 480814741 1442444223