128403326 has 16 divisors (see below), whose sum is σ = 195534000. Its totient is φ = 63231168.

The previous prime is 128403313. The next prime is 128403337. The reversal of 128403326 is 623304821.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49100 + ... + 51648.

It is an arithmetic number, because the mean of its divisors is an integer number (12220875).

Almost surely, 2^128403326 is an apocalyptic number.

128403326 is a deficient number, since it is larger than the sum of its proper divisors (67130674).

128403326 is a wasteful number, since it uses less digits than its factorization.

128403326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2923.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 128403326 is about 11331.5191391093. The cubic root of 128403326 is about 504.4971971623.

The spelling of 128403326 in words is "one hundred twenty-eight million, four hundred three thousand, three hundred twenty-six".