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128752314 = 2321458719
BaseRepresentation
bin1111010110010…
…01101010111010
322222021021222020
413223021222322
5230430033224
620435335310
73122243115
oct753115272
9288237866
10128752314
116674a579
1237151536
132089c902
141315757c
15b483c79
hex7ac9aba

128752314 has 8 divisors (see below), whose sum is σ = 257504640. Its totient is φ = 42917436.

The previous prime is 128752307. The next prime is 128752319. The reversal of 128752314 is 413257821.

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

128752314 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (128752319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10729354 + ... + 10729365.

It is an arithmetic number, because the mean of its divisors is an integer number (32188080).

Almost surely, 2128752314 is an apocalyptic number.

128752314 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

128752314 is a wasteful number, since it uses less digits than its factorization.

128752314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21458724.

The product of its digits is 13440, while the sum is 33.

The square root of 128752314 is about 11346.9076844751. The cubic root of 128752314 is about 504.9538421362.

The spelling of 128752314 in words is "one hundred twenty-eight million, seven hundred fifty-two thousand, three hundred fourteen".

Divisors: 1 2 3 6 21458719 42917438 64376157 128752314