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128860223 = 1934919433
BaseRepresentation
bin1111010111001…
…00000000111111
322222110202222212
413223210000333
5230442011343
620441531035
73123202532
oct753440077
9288422885
10128860223
1166813658
12371a3a7b
1320909a6b
1413184a19
15b4a5c18
hex7ae403f

128860223 has 8 divisors (see below), whose sum is σ = 136038000. Its totient is φ = 121722048.

The previous prime is 128860219. The next prime is 128860231. The reversal of 128860223 is 322068821.

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

It is a cyclic number.

It is not a de Polignac number, because 128860223 - 22 = 128860219 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 128860223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128865223) 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, 3086 + ... + 16347.

It is an arithmetic number, because the mean of its divisors is an integer number (17004750).

Almost surely, 2128860223 is an apocalyptic number.

128860223 is a deficient number, since it is larger than the sum of its proper divisors (7177777).

128860223 is a wasteful number, since it uses less digits than its factorization.

128860223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19801.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 128860223 is about 11351.6616845288. The cubic root of 128860223 is about 505.0948722191.

The spelling of 128860223 in words is "one hundred twenty-eight million, eight hundred sixty thousand, two hundred twenty-three".

Divisors: 1 19 349 6631 19433 369227 6782117 128860223