128386326 has 16 divisors (see below), whose sum is σ = 257992128. Its totient is φ = 42592200.

The previous prime is 128386303. The next prime is 128386351. The reversal of 128386326 is 623683821.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49440 + ... + 51971.

It is an arithmetic number, because the mean of its divisors is an integer number (16124508).

Almost surely, 2^128386326 is an apocalyptic number.

128386326 is an abundant number, since it is smaller than the sum of its proper divisors (129605802).

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

128386326 is a wasteful number, since it uses less digits than its factorization.

128386326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101627.

The product of its digits is 82944, while the sum is 39.

The square root of 128386326 is about 11330.7689942034. The cubic root of 128386326 is about 504.4749318229.

The spelling of 128386326 in words is "one hundred twenty-eight million, three hundred eighty-six thousand, three hundred twenty-six".