128716626 has 16 divisors (see below), whose sum is σ = 258012000. Its totient is φ = 42809088.

The previous prime is 128716591. The next prime is 128716631. The reversal of 128716626 is 626617821.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21196 + ... + 26583.

It is an arithmetic number, because the mean of its divisors is an integer number (16125750).

Almost surely, 2^128716626 is an apocalyptic number.

128716626 is an abundant number, since it is smaller than the sum of its proper divisors (129295374).

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

128716626 is a wasteful number, since it uses less digits than its factorization.

128716626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48233.

The product of its digits is 48384, while the sum is 39.

The square root of 128716626 is about 11345.3349884435. The cubic root of 128716626 is about 504.9071828893.

The spelling of 128716626 in words is "one hundred twenty-eight million, seven hundred sixteen thousand, six hundred twenty-six".