128969468 has 6 divisors (see below), whose sum is σ = 225696576. Its totient is φ = 64484732.

The previous prime is 128969453. The next prime is 128969501. The reversal of 128969468 is 864969821.

It is a happy number.

It is a zygodrome in base 3.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16121180 + ... + 16121187.

It is an arithmetic number, because the mean of its divisors is an integer number (37616096).

Almost surely, 2^128969468 is an apocalyptic number.

It is an amenable number.

128969468 is a deficient number, since it is larger than the sum of its proper divisors (96727108).

128969468 is a wasteful number, since it uses less digits than its factorization.

128969468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32242371 (or 32242369 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 53.

The square root of 128969468 is about 11356.4725157066. The cubic root of 128969468 is about 505.2375681888.

The spelling of 128969468 in words is "one hundred twenty-eight million, nine hundred sixty-nine thousand, four hundred sixty-eight".