128842626 has 32 divisors (see below), whose sum is σ = 297649728. Its totient is φ = 36746240.

The previous prime is 128842583. The next prime is 128842631. The reversal of 128842626 is 626248821.

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 15 ways as a sum of consecutive naturals, for example, 56295 + ... + 58538.

It is an arithmetic number, because the mean of its divisors is an integer number (9301554).

Almost surely, 2^128842626 is an apocalyptic number.

128842626 is an abundant number, since it is smaller than the sum of its proper divisors (168807102).

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

128842626 is a wasteful number, since it uses less digits than its factorization.

128842626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114866.

The product of its digits is 73728, while the sum is 39.

The square root of 128842626 is about 11350.8865733034. The cubic root of 128842626 is about 505.0718794525.

The spelling of 128842626 in words is "one hundred twenty-eight million, eight hundred forty-two thousand, six hundred twenty-six".