128606468 has 6 divisors (see below), whose sum is σ = 225061326. Its totient is φ = 64303232.

The previous prime is 128606453. The next prime is 128606477. The reversal of 128606468 is 864606821.

It can be written as a sum of positive squares in only one way, i.e., 125395204 + 3211264 = 11198^2 + 1792^2 .

It is a super-2 number, since 2×128606468² = 33079247222870048, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16075805 + ... + 16075812.

It is an arithmetic number, because the mean of its divisors is an integer number (37510221).

Almost surely, 2^128606468 is an apocalyptic number.

It is an amenable number.

128606468 is a deficient number, since it is larger than the sum of its proper divisors (96454858).

128606468 is a wasteful number, since it uses less digits than its factorization.

128606468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32151621 (or 32151619 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 41.

The square root of 128606468 is about 11340.4791785885. The cubic root of 128606468 is about 504.7631055688.

The spelling of 128606468 in words is "one hundred twenty-eight million, six hundred six thousand, four hundred sixty-eight".