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128000033 = 719019619
BaseRepresentation
bin1111010000100…
…10000000100001
322220212002000222
413220102000201
5230232000113
620411252425
73112660640
oct750220041
9286762028
10128000033
1166286357
1236a4a115
1320698385
1412ddd357
15b385e08
hex7a12021

128000033 has 8 divisors (see below), whose sum is σ = 146377920. Its totient is φ = 109645200.

The previous prime is 128000011. The next prime is 128000039. The reversal of 128000033 is 330000821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 128000033 - 216 = 127934497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 127999975 and 128000020.

It is not an unprimeable number, because it can be changed into a prime (128000039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8498 + ... + 18116.

It is an arithmetic number, because the mean of its divisors is an integer number (18297240).

Almost surely, 2128000033 is an apocalyptic number.

It is an amenable number.

128000033 is a deficient number, since it is larger than the sum of its proper divisors (18377887).

128000033 is an equidigital number, since it uses as much as digits as its factorization.

128000033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11527.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 128000033 is about 11313.7099573924. The cubic root of 128000033 is about 503.9684632677.

Adding to 128000033 its reverse (330000821), we get a palindrome (458000854).

The spelling of 128000033 in words is "one hundred twenty-eight million, thirty-three", and thus it is an aban number.

Divisors: 1 7 1901 9619 13307 67333 18285719 128000033