128522468 has 6 divisors (see below), whose sum is σ = 224914326. Its totient is φ = 64261232.

The previous prime is 128522467. The next prime is 128522477. The reversal of 128522468 is 864225821.

It can be written as a sum of positive squares in only one way, i.e., 108826624 + 19695844 = 10432^2 + 4438^2 .

It is a super-2 number, since 2×128522468² = 33036049561622048, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (128522467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16065305 + ... + 16065312.

It is an arithmetic number, because the mean of its divisors is an integer number (37485721).

Almost surely, 2^128522468 is an apocalyptic number.

It is an amenable number.

128522468 is a deficient number, since it is larger than the sum of its proper divisors (96391858).

128522468 is a wasteful number, since it uses less digits than its factorization.

128522468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32130621 (or 32130619 counting only the distinct ones).

The product of its digits is 61440, while the sum is 38.

The square root of 128522468 is about 11336.7750264350. The cubic root of 128522468 is about 504.6531853961.

The spelling of 128522468 in words is "one hundred twenty-eight million, five hundred twenty-two thousand, four hundred sixty-eight".