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128237048 = 2329695399
BaseRepresentation
bin1111010010010…
…11110111111000
322221022010011022
413221023313320
5230312041143
620420322012
73114665642
oct751136770
9287263138
10128237048
1166428435
1236b43308
132074c214
1413061892
15b3d1268
hex7a4bdf8

128237048 has 16 divisors (see below), whose sum is σ = 240570000. Its totient is φ = 64085056.

The previous prime is 128237047. The next prime is 128237077. The reversal of 128237048 is 840732821.

It is a super-4 number, since 4×1282370484 (a number of 34 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 128236999 and 128237017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128237041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21053 + ... + 26451.

It is an arithmetic number, because the mean of its divisors is an integer number (15035625).

Almost surely, 2128237048 is an apocalyptic number.

It is an amenable number.

128237048 is a deficient number, since it is larger than the sum of its proper divisors (112332952).

128237048 is a wasteful number, since it uses less digits than its factorization.

128237048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8374 (or 8370 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 128237048 is about 11324.1797936981. The cubic root of 128237048 is about 504.2793341109.

Adding to 128237048 its reverse (840732821), we get a palindrome (968969869).

The spelling of 128237048 in words is "one hundred twenty-eight million, two hundred thirty-seven thousand, forty-eight".

Divisors: 1 2 4 8 2969 5399 5938 10798 11876 21596 23752 43192 16029631 32059262 64118524 128237048