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128488195 = 5112336149
BaseRepresentation
bin1111010100010…
…01001100000011
322221202212200001
413222021030003
5230343110240
620425540431
73120063103
oct752111403
9287685601
10128488195
116658a0a0
1237044717
1320809624
14130c9203
15b43089a
hex7a89303

128488195 has 8 divisors (see below), whose sum is σ = 168202800. Its totient is φ = 93445920.

The previous prime is 128488187. The next prime is 128488223. The reversal of 128488195 is 591884821.

It is a happy number.

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

It is not a de Polignac number, because 128488195 - 23 = 128488187 is a prime.

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, 1168020 + ... + 1168129.

It is an arithmetic number, because the mean of its divisors is an integer number (21025350).

Almost surely, 2128488195 is an apocalyptic number.

128488195 is a deficient number, since it is larger than the sum of its proper divisors (39714605).

128488195 is a wasteful number, since it uses less digits than its factorization.

128488195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2336165.

The product of its digits is 184320, while the sum is 46.

The square root of 128488195 is about 11335.2633405669. The cubic root of 128488195 is about 504.6083228997.

The spelling of 128488195 in words is "one hundred twenty-eight million, four hundred eighty-eight thousand, one hundred ninety-five".

Divisors: 1 5 11 55 2336149 11680745 25697639 128488195