128923468 has 12 divisors (see below), whose sum is σ = 225827280. Its totient is φ = 64401392.

The previous prime is 128923453. The next prime is 128923469. The reversal of 128923468 is 864329821.

It is a super-2 number, since 2×128923468² = 33242521202294048, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (128923469) 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, 10096 + ... + 18967.

It is an arithmetic number, because the mean of its divisors is an integer number (18818940).

Almost surely, 2^128923468 is an apocalyptic number.

It is an amenable number.

128923468 is a deficient number, since it is larger than the sum of its proper divisors (96903812).

128923468 is a wasteful number, since it uses less digits than its factorization.

128923468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30176 (or 30174 counting only the distinct ones).

The product of its digits is 165888, while the sum is 43.

The square root of 128923468 is about 11354.4470583116. The cubic root of 128923468 is about 505.1774927508.

The spelling of 128923468 in words is "one hundred twenty-eight million, nine hundred twenty-three thousand, four hundred sixty-eight".