128626384 has 10 divisors (see below), whose sum is σ = 249213650. Its totient is φ = 64313184.

The previous prime is 128626367. The next prime is 128626387. The reversal of 128626384 is 483626821.

It can be written as a sum of positive squares in only one way, i.e., 71774784 + 56851600 = 8472^2 + 7540^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128626387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4019559 + ... + 4019590.

It is an arithmetic number, because the mean of its divisors is an integer number (24921365).

Almost surely, 2^128626384 is an apocalyptic number.

It is an amenable number.

128626384 is a deficient number, since it is larger than the sum of its proper divisors (120587266).

128626384 is an equidigital number, since it uses as much as digits as its factorization.

128626384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8039157 (or 8039151 counting only the distinct ones).

The product of its digits is 110592, while the sum is 40.

The square root of 128626384 is about 11341.3572380029. The cubic root of 128626384 is about 504.7891600985.

The spelling of 128626384 in words is "one hundred twenty-eight million, six hundred twenty-six thousand, three hundred eighty-four".