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128002 = 2741223
BaseRepresentation
bin11111010000000010
320111120211
4133100002
513044002
62424334
71042120
oct372002
9214524
10128002
1188196
12620aa
1346354
1434910
1527dd7
hex1f402

128002 has 16 divisors (see below), whose sum is σ = 225792. Its totient is φ = 53280.

The previous prime is 127997. The next prime is 128021. The reversal of 128002 is 200821.

Adding to 128002 its reverse (200821), we get a palindrome (328823).

It can be divided in two parts, 12800 and 2, that multiplied together give a square (25600 = 1602).

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 7 ways as a sum of consecutive naturals, for example, 463 + ... + 685.

It is an arithmetic number, because the mean of its divisors is an integer number (14112).

2128002 is an apocalyptic number.

128002 is a deficient number, since it is larger than the sum of its proper divisors (97790).

128002 is a wasteful number, since it uses less digits than its factorization.

128002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 128002 is about 357.7736714740. The cubic root of 128002 is about 50.3971044780.

The spelling of 128002 in words is "one hundred twenty-eight thousand, two".

Divisors: 1 2 7 14 41 82 223 287 446 574 1561 3122 9143 18286 64001 128002