404468628 has 24 divisors (see below), whose sum is σ = 955133088. Its totient is φ = 133198176.

The previous prime is 404468609. The next prime is 404468651. The reversal of 404468628 is 826864404.

It is a self number, because there is not a number n which added to its sum of digits gives 404468628.

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, 202051 + ... + 204042.

It is an arithmetic number, because the mean of its divisors is an integer number (39797212).

Almost surely, 2^404468628 is an apocalyptic number.

It is an amenable number.

404468628 is an abundant number, since it is smaller than the sum of its proper divisors (550664460).

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

404468628 is a wasteful number, since it uses less digits than its factorization.

404468628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406183 (or 406181 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 42.

The square root of 404468628 is about 20111.4054208054. The cubic root of 404468628 is about 739.5399063514.

The spelling of 404468628 in words is "four hundred four million, four hundred sixty-eight thousand, six hundred twenty-eight".