128035668 has 24 divisors (see below), whose sum is σ = 299121760. Its totient is φ = 42625440.

The previous prime is 128035643. The next prime is 128035681. The reversal of 128035668 is 866530821.

It is a happy number.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

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, 4098 + ... + 16518.

Almost surely, 2^128035668 is an apocalyptic number.

It is an amenable number.

128035668 is an abundant number, since it is smaller than the sum of its proper divisors (171086092).

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

128035668 is a wasteful number, since it uses less digits than its factorization.

128035668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13287 (or 13285 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 128035668 is about 11315.2847069793. The cubic root of 128035668 is about 504.0152269272.

The spelling of 128035668 in words is "one hundred twenty-eight million, thirty-five thousand, six hundred sixty-eight".