404128875 has 16 divisors (see below), whose sum is σ = 672471072. Its totient is φ = 215535200.

The previous prime is 404128867. The next prime is 404128897. The reversal of 404128875 is 578821404.

It is a happy number.

It is not a de Polignac number, because 404128875 - 2³ = 404128867 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 538464 + ... + 539213.

It is an arithmetic number, because the mean of its divisors is an integer number (42029442).

Almost surely, 2^404128875 is an apocalyptic number.

404128875 is a deficient number, since it is larger than the sum of its proper divisors (268342197).

404128875 is a wasteful number, since it uses less digits than its factorization.

404128875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077695 (or 1077685 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 39.

The square root of 404128875 is about 20102.9568720624. The cubic root of 404128875 is about 739.3327775655.

The spelling of 404128875 in words is "four hundred four million, one hundred twenty-eight thousand, eight hundred seventy-five".