128441626 has 4 divisors (see below), whose sum is σ = 192662442. Its totient is φ = 64220812.

The previous prime is 128441603. The next prime is 128441633. The reversal of 128441626 is 626144821.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 122434225 + 6007401 = 11065^2 + 2451^2 .

It is a junction number, because it is equal to n+sod(n) for n = 128441591 and 128441600.

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 as a sum of consecutive naturals, namely, 32110405 + ... + 32110408.

Almost surely, 2^128441626 is an apocalyptic number.

128441626 is a deficient number, since it is larger than the sum of its proper divisors (64220816).

128441626 is an equidigital number, since it uses as much as digits as its factorization.

128441626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64220815.

The product of its digits is 18432, while the sum is 34.

The square root of 128441626 is about 11333.2089895140. The cubic root of 128441626 is about 504.5473524618.

The spelling of 128441626 in words is "one hundred twenty-eight million, four hundred forty-one thousand, six hundred twenty-six".