Search a number
-
+
128314369 = 1312933343
BaseRepresentation
bin1111010010111…
…10110000000001
322221110001020001
413221132300001
5230322024434
620422120001
73115440241
oct751366001
9287401201
10128314369
1166480537
1236b80001
1320778481
1413081b21
15b3e9114
hex7a5ec01

128314369 has 8 divisors (see below), whose sum is σ = 129773952. Its totient is φ = 126862320.

The previous prime is 128314331. The next prime is 128314393. The reversal of 128314369 is 963413821.

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 128314369 - 211 = 128312321 is a prime.

It is a super-2 number, since 2×1283143692 = 32929154583736322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128314169) 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, 36712 + ... + 40054.

It is an arithmetic number, because the mean of its divisors is an integer number (16221744).

Almost surely, 2128314369 is an apocalyptic number.

It is an amenable number.

128314369 is a deficient number, since it is larger than the sum of its proper divisors (1459583).

128314369 is a wasteful number, since it uses less digits than its factorization.

128314369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3767.

The product of its digits is 31104, while the sum is 37.

The square root of 128314369 is about 11327.5932571752. The cubic root of 128314369 is about 504.3806661076.

The spelling of 128314369 in words is "one hundred twenty-eight million, three hundred fourteen thousand, three hundred sixty-nine".

Divisors: 1 131 293 3343 38383 437933 979499 128314369