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128485524 = 223171933149
BaseRepresentation
bin1111010100010…
…00100010010100
322221202202000010
413222020202110
5230343014044
620425520220
73120052236
oct752104224
9287682003
10128485524
1166588092
1237043070
132080834b
14130c8256
15b42ebb9
hex7a88894

128485524 has 48 divisors (see below), whose sum is σ = 334152000. Its totient is φ = 38186496.

The previous prime is 128485517. The next prime is 128485529. The reversal of 128485524 is 425584821.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128485529) 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 15 ways as a sum of consecutive naturals, for example, 12699 + ... + 20450.

It is an arithmetic number, because the mean of its divisors is an integer number (6961500).

Almost surely, 2128485524 is an apocalyptic number.

It is an amenable number.

128485524 is an abundant number, since it is smaller than the sum of its proper divisors (205666476).

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

128485524 is a wasteful number, since it uses less digits than its factorization.

128485524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33192 (or 33190 counting only the distinct ones).

The product of its digits is 102400, while the sum is 39.

The square root of 128485524 is about 11335.1455217831. The cubic root of 128485524 is about 504.6048262927.

The spelling of 128485524 in words is "one hundred twenty-eight million, four hundred eighty-five thousand, five hundred twenty-four".

Divisors: 1 2 3 4 6 12 17 19 34 38 51 57 68 76 102 114 204 228 323 646 969 1292 1938 3876 33149 66298 99447 132596 198894 397788 563533 629831 1127066 1259662 1690599 1889493 2254132 2519324 3381198 3778986 6762396 7557972 10707127 21414254 32121381 42828508 64242762 128485524