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1442447008 = 25172991433
BaseRepresentation
bin101010111111001…
…1111111010100000
310201112012220022021
41111332133322200
510423231301013
6355044351224
750513411602
oct12576377240
93645186267
101442447008
11680250872
123430a5514
1319cac1052
14d9801172
158697ba8d
hex55f9fea0

1442447008 has 48 divisors (see below), whose sum is σ = 3110584680. Its totient is φ = 655384576.

The previous prime is 1442446981. The next prime is 1442447009. The reversal of 1442447008 is 8007442441.

It can be written as a sum of positive squares in 4 ways, for example, as 1170460944 + 271986064 = 34212^2 + 16492^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (1442447009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29941 + ... + 61492.

Almost surely, 21442447008 is an apocalyptic number.

It is an amenable number.

1442447008 is an abundant number, since it is smaller than the sum of its proper divisors (1668137672).

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

1442447008 is a wasteful number, since it uses less digits than its factorization.

1442447008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91489 (or 91481 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 34.

The square root of 1442447008 is about 37979.5603976665. The cubic root of 1442447008 is about 1129.8825178721.

Adding to 1442447008 its reverse (8007442441), we get a palindrome (9449889449).

The spelling of 1442447008 in words is "one billion, four hundred forty-two million, four hundred forty-seven thousand, eight".

Divisors: 1 2 4 8 16 17 29 32 34 58 68 116 136 232 272 464 493 544 928 986 1972 3944 7888 15776 91433 182866 365732 731464 1462928 1554361 2651557 2925856 3108722 5303114 6217444 10606228 12434888 21212456 24869776 42424912 45076469 49739552 84849824 90152938 180305876 360611752 721223504 1442447008