404428108 has 24 divisors (see below), whose sum is σ = 834950144. Its totient is φ = 167734800.

The previous prime is 404428069. The next prime is 404428121. The reversal of 404428108 is 801824404.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a self number, because there is not a number n which added to its sum of digits gives 404428108.

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, 232098 + ... + 233833.

Almost surely, 2^404428108 is an apocalyptic number.

It is an amenable number.

404428108 is an abundant number, since it is smaller than the sum of its proper divisors (430522036).

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

404428108 is a wasteful number, since it uses less digits than its factorization.

404428108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465973 (or 465971 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 31.

The square root of 404428108 is about 20110.3980070013. The cubic root of 404428108 is about 739.5152096212.

The spelling of 404428108 in words is "four hundred four million, four hundred twenty-eight thousand, one hundred eight".