128436602 has 8 divisors (see below), whose sum is σ = 220177056. Its totient is φ = 55044252.

The previous prime is 128436601. The next prime is 128436631. The reversal of 128436602 is 206634821.

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 (128436601) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4587008 + ... + 4587035.

It is an arithmetic number, because the mean of its divisors is an integer number (27522132).

Almost surely, 2^128436602 is an apocalyptic number.

128436602 is a deficient number, since it is larger than the sum of its proper divisors (91740454).

128436602 is an equidigital number, since it uses as much as digits as its factorization.

128436602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9174052.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 128436602 is about 11332.9873378558. The cubic root of 128436602 is about 504.5407739119.

The spelling of 128436602 in words is "one hundred twenty-eight million, four hundred thirty-six thousand, six hundred two".