128011404 has 24 divisors (see below), whose sum is σ = 298877040. Its totient is φ = 42644224.

The previous prime is 128011393. The next prime is 128011427. The reversal of 128011404 is 404110821.

It is a happy 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, 33832 + ... + 37424.

It is an arithmetic number, because the mean of its divisors is an integer number (12453210).

Almost surely, 2^128011404 is an apocalyptic number.

It is an amenable number.

128011404 is an abundant number, since it is smaller than the sum of its proper divisors (170865636).

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

128011404 is a wasteful number, since it uses less digits than its factorization.

128011404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6569 (or 6567 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 128011404 is about 11314.2124781180. The cubic root of 128011404 is about 503.9833863256.

The spelling of 128011404 in words is "one hundred twenty-eight million, eleven thousand, four hundred four".