128288626 has 8 divisors (see below), whose sum is σ = 192684204. Its totient is φ = 64060560.

The previous prime is 128288623. The next prime is 128288659. The reversal of 128288626 is 626882821.

It can be written as a sum of positive squares in 2 ways, for example, as 112678225 + 15610401 = 10615^2 + 3951^2 .

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

It is not an unprimeable number, because it can be changed into a prime (128288623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39945 + ... + 43036.

Almost surely, 2^128288626 is an apocalyptic number.

128288626 is a deficient number, since it is larger than the sum of its proper divisors (64395578).

128288626 is an equidigital number, since it uses as much as digits as its factorization.

128288626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83756.

The product of its digits is 147456, while the sum is 43.

The square root of 128288626 is about 11326.4569040808. The cubic root of 128288626 is about 504.3469334866.

The spelling of 128288626 in words is "one hundred twenty-eight million, two hundred eighty-eight thousand, six hundred twenty-six".