128338435 has 12 divisors (see below), whose sum is σ = 157495968. Its totient is φ = 100350288.

The previous prime is 128338421. The next prime is 128338471. The reversal of 128338435 is 534833821.

It is not a de Polignac number, because 128338435 - 2⁵ = 128338403 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128338394 and 128338403.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 173296 + ... + 174034.

It is an arithmetic number, because the mean of its divisors is an integer number (13124664).

Almost surely, 2^128338435 is an apocalyptic number.

128338435 is a deficient number, since it is larger than the sum of its proper divisors (29157533).

128338435 is an frugal number, since it uses more digits than its factorization.

128338435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1530 (or 791 counting only the distinct ones).

The product of its digits is 69120, while the sum is 37.

The square root of 128338435 is about 11328.6554806826. The cubic root of 128338435 is about 504.4121971730.

The spelling of 128338435 in words is "one hundred twenty-eight million, three hundred thirty-eight thousand, four hundred thirty-five".