128215326 has 16 divisors (see below), whose sum is σ = 271515024. Its totient is φ = 40224384.

The previous prime is 128215303. The next prime is 128215331. The reversal of 128215326 is 623512821.

It is a junction number, because it is equal to n+sod(n) for n = 128215293 and 128215302.

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, 628405 + ... + 628608.

It is an arithmetic number, because the mean of its divisors is an integer number (16969689).

Almost surely, 2^128215326 is an apocalyptic number.

128215326 is an abundant number, since it is smaller than the sum of its proper divisors (143299698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128215326 is a wasteful number, since it uses less digits than its factorization.

128215326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1257035.

The product of its digits is 5760, while the sum is 30.

The square root of 128215326 is about 11323.2206549197. The cubic root of 128215326 is about 504.2508593074.

The spelling of 128215326 in words is "one hundred twenty-eight million, two hundred fifteen thousand, three hundred twenty-six".