128232406 has 16 divisors (see below), whose sum is σ = 211276800. Its totient is φ = 58100328.

The previous prime is 128232397. The next prime is 128232409. The reversal of 128232406 is 604232821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128232409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72486 + ... + 74233.

It is an arithmetic number, because the mean of its divisors is an integer number (13204800).

Almost surely, 2^128232406 is an apocalyptic number.

128232406 is a deficient number, since it is larger than the sum of its proper divisors (83044394).

128232406 is a wasteful number, since it uses less digits than its factorization.

128232406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146763.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 128232406 is about 11323.9748321868. The cubic root of 128232406 is about 504.2732493043.

The spelling of 128232406 in words is "one hundred twenty-eight million, two hundred thirty-two thousand, four hundred six".