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128483500 = 2253256967
BaseRepresentation
bin1111010100010…
…00000010101100
322221202122020011
413222020002230
5230342433000
620425503004
73120043315
oct752100254
9287678204
10128483500
1166586612
1237041a64
1320807452
14130c760c
15b42e2ba
hex7a880ac

128483500 has 24 divisors (see below), whose sum is σ = 280609056. Its totient is φ = 51393200.

The previous prime is 128483489. The next prime is 128483503. The reversal of 128483500 is 5384821.

It is not an unprimeable number, because it can be changed into a prime (128483503) 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 7 ways as a sum of consecutive naturals, for example, 127984 + ... + 128983.

It is an arithmetic number, because the mean of its divisors is an integer number (11692044).

Almost surely, 2128483500 is an apocalyptic number.

128483500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128483500 is an abundant number, since it is smaller than the sum of its proper divisors (152125556).

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

128483500 is a wasteful number, since it uses less digits than its factorization.

128483500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256986 (or 256974 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 128483500 is about 11335.0562415896. The cubic root of 128483500 is about 504.6021766413.

The spelling of 128483500 in words is "one hundred twenty-eight million, four hundred eighty-three thousand, five hundred".

Divisors: 1 2 4 5 10 20 25 50 100 125 250 500 256967 513934 1027868 1284835 2569670 5139340 6424175 12848350 25696700 32120875 64241750 128483500