128035312 has 20 divisors (see below), whose sum is σ = 248343480. Its totient is φ = 63946688.

The previous prime is 128035307. The next prime is 128035321. The reversal of 128035312 is 213530821.

It is a super-2 number, since 2×128035312² = 32786082237874688, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12378 + ... + 20230.

It is an arithmetic number, because the mean of its divisors is an integer number (12417174).

Almost surely, 2^128035312 is an apocalyptic number.

It is an amenable number.

128035312 is a deficient number, since it is larger than the sum of its proper divisors (120308168).

128035312 is a wasteful number, since it uses less digits than its factorization.

128035312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8880 (or 8874 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 128035312 is about 11315.2689760341. The cubic root of 128035312 is about 504.0147597928.

The spelling of 128035312 in words is "one hundred twenty-eight million, thirty-five thousand, three hundred twelve".