404666428 has 12 divisors (see below), whose sum is σ = 723233952. Its totient is φ = 198028160.

The previous prime is 404666413. The next prime is 404666441. The reversal of 404666428 is 824666404.

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, 1076053 + ... + 1076428.

It is an arithmetic number, because the mean of its divisors is an integer number (60269496).

Almost surely, 2^404666428 is an apocalyptic number.

It is an amenable number.

404666428 is a deficient number, since it is larger than the sum of its proper divisors (318567524).

404666428 is a wasteful number, since it uses less digits than its factorization.

404666428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2152532 (or 2152530 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 40.

The square root of 404666428 is about 20116.3224273225. The cubic root of 404666428 is about 739.6604407549.

The spelling of 404666428 in words is "four hundred four million, six hundred sixty-six thousand, four hundred twenty-eight".