Search a number
-
+
128202932 = 221113224131
BaseRepresentation
bin1111010010000…
…11100010110100
322221020101100202
413221003202310
5230304443212
620415500032
73114464324
oct751034264
9287211322
10128202932
1166404840
1236b27618
1320739830
1413053284
15b3c60c2
hex7a438b4

128202932 has 24 divisors (see below), whose sum is σ = 263579232. Its totient is φ = 53791200.

The previous prime is 128202931. The next prime is 128202973. The reversal of 128202932 is 239202821.

It is a junction number, because it is equal to n+sod(n) for n = 128202895 and 128202904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128202931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111494 + ... + 112637.

It is an arithmetic number, because the mean of its divisors is an integer number (10982468).

Almost surely, 2128202932 is an apocalyptic number.

It is an amenable number.

128202932 is an abundant number, since it is smaller than the sum of its proper divisors (135376300).

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

128202932 is a wasteful number, since it uses less digits than its factorization.

128202932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224159 (or 224157 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 128202932 is about 11322.6733592381. The cubic root of 128202932 is about 504.2346108948.

The spelling of 128202932 in words is "one hundred twenty-eight million, two hundred two thousand, nine hundred thirty-two".

Divisors: 1 2 4 11 13 22 26 44 52 143 286 572 224131 448262 896524 2465441 2913703 4930882 5827406 9861764 11654812 32050733 64101466 128202932