128716670 has 16 divisors (see below), whose sum is σ = 233461008. Its totient is φ = 51093120.

The previous prime is 128716669. The next prime is 128716711. The reversal of 128716670 is 76617821.

It is a super-2 number, since 2×128716670² = 33135962271777800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47819 + ... + 50438.

It is an arithmetic number, because the mean of its divisors is an integer number (14591313).

Almost surely, 2^128716670 is an apocalyptic number.

128716670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128716670 is a deficient number, since it is larger than the sum of its proper divisors (104744338).

128716670 is a wasteful number, since it uses less digits than its factorization.

128716670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98395.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 128716670 is about 11345.3369275663. The cubic root of 128716670 is about 504.9072404212.

The spelling of 128716670 in words is "one hundred twenty-eight million, seven hundred sixteen thousand, six hundred seventy".