Search a number
-
+
128068838 = 21511992131
BaseRepresentation
bin1111010001000…
…10110011100110
322220222120102022
413220202303212
5230241200323
620412543142
73113365352
oct750426346
9286876368
10128068838
1166323017
1236a81ab2
13206c07a1
141301a462
15b39b4c8
hex7a22ce6

128068838 has 16 divisors (see below), whose sum is σ = 194438400. Its totient is φ = 63261000.

The previous prime is 128068819. The next prime is 128068847. The reversal of 128068838 is 838860821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59033 + ... + 61163.

It is an arithmetic number, because the mean of its divisors is an integer number (12152400).

Almost surely, 2128068838 is an apocalyptic number.

128068838 is a deficient number, since it is larger than the sum of its proper divisors (66369562).

128068838 is a wasteful number, since it uses less digits than its factorization.

128068838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2483.

The product of its (nonzero) digits is 147456, while the sum is 44.

The square root of 128068838 is about 11316.7503286058. The cubic root of 128068838 is about 504.0587479810.

The spelling of 128068838 in words is "one hundred twenty-eight million, sixty-eight thousand, eight hundred thirty-eight".

Divisors: 1 2 151 199 302 398 2131 4262 30049 60098 321781 424069 643562 848138 64034419 128068838