128406696 has 32 divisors (see below), whose sum is σ = 350200800. Its totient is φ = 38911040.

The previous prime is 128406683. The next prime is 128406697. The reversal of 128406696 is 696604821.

It is not an unprimeable number, because it can be changed into a prime (128406697) 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, 242931 + ... + 243458.

It is an arithmetic number, because the mean of its divisors is an integer number (10943775).

Almost surely, 2^128406696 is an apocalyptic number.

It is an amenable number.

128406696 is an abundant number, since it is smaller than the sum of its proper divisors (221794104).

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

128406696 is a wasteful number, since it uses less digits than its factorization.

128406696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486409 (or 486405 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 128406696 is about 11331.6678384075. The cubic root of 128406696 is about 504.5016107049.

The spelling of 128406696 in words is "one hundred twenty-eight million, four hundred six thousand, six hundred ninety-six".