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128846164 = 22293109937
BaseRepresentation
bin1111010111000…
…00100101010100
322222110001201011
413223200211110
5230441034124
620441342004
73123113536
oct753404524
9288401634
10128846164
1166804037
1237197904
1320903545
141317d856
15b4a1994
hex7ae0954

128846164 has 12 divisors (see below), whose sum is σ = 226252404. Its totient is φ = 64202624.

The previous prime is 128846153. The next prime is 128846191. The reversal of 128846164 is 461648821.

It can be written as a sum of positive squares in 2 ways, for example, as 78322500 + 50523664 = 8850^2 + 7108^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 53797 + ... + 56140.

It is an arithmetic number, because the mean of its divisors is an integer number (18854367).

Almost surely, 2128846164 is an apocalyptic number.

It is an amenable number.

128846164 is a deficient number, since it is larger than the sum of its proper divisors (97406240).

128846164 is a wasteful number, since it uses less digits than its factorization.

128846164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110234 (or 110232 counting only the distinct ones).

The product of its digits is 73728, while the sum is 40.

The square root of 128846164 is about 11351.0424190909. The cubic root of 128846164 is about 505.0765024773.

The spelling of 128846164 in words is "one hundred twenty-eight million, eight hundred forty-six thousand, one hundred sixty-four".

Divisors: 1 2 4 293 586 1172 109937 219874 439748 32211541 64423082 128846164