128281713 has 8 divisors (see below), whose sum is σ = 195476928. Its totient is φ = 73303824.

The previous prime is 128281709. The next prime is 128281721. The reversal of 128281713 is 317182821.

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

It is not a de Polignac number, because 128281713 - 2² = 128281709 is a prime.

It is a super-3 number, since 3×128281713³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (128281733) 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, 3054306 + ... + 3054347.

It is an arithmetic number, because the mean of its divisors is an integer number (24434616).

Almost surely, 2^128281713 is an apocalyptic number.

It is an amenable number.

128281713 is a deficient number, since it is larger than the sum of its proper divisors (67195215).

128281713 is an equidigital number, since it uses as much as digits as its factorization.

128281713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6108663.

The product of its digits is 5376, while the sum is 33.

The square root of 128281713 is about 11326.1517295152. The cubic root of 128281713 is about 504.3378741931.

It can be divided in two parts, 12828 and 1713, that added together give a palindrome (14541).

The spelling of 128281713 in words is "one hundred twenty-eight million, two hundred eighty-one thousand, seven hundred thirteen".