128517214 has 8 divisors (see below), whose sum is σ = 220315248. Its totient is φ = 55078800.

The previous prime is 128517203. The next prime is 128517251. The reversal of 128517214 is 412715821.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4589887 + ... + 4589914.

It is an arithmetic number, because the mean of its divisors is an integer number (27539406).

Almost surely, 2^128517214 is an apocalyptic number.

128517214 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

128517214 is a deficient number, since it is larger than the sum of its proper divisors (91798034).

128517214 is an equidigital number, since it uses as much as digits as its factorization.

128517214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9179810.

The product of its digits is 4480, while the sum is 31.

The square root of 128517214 is about 11336.5433003187. The cubic root of 128517214 is about 504.6463085597.

The spelling of 128517214 in words is "one hundred twenty-eight million, five hundred seventeen thousand, two hundred fourteen".