404673636 has 12 divisors (see below), whose sum is σ = 944238512. Its totient is φ = 134891208.

The previous prime is 404673617. The next prime is 404673671. The reversal of 404673636 is 636376404.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 404673594 and 404673603.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16861390 + ... + 16861413.

Almost surely, 2^404673636 is an apocalyptic number.

It is an amenable number.

404673636 is an abundant number, since it is smaller than the sum of its proper divisors (539564876).

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

404673636 is a wasteful number, since it uses less digits than its factorization.

404673636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33722810 (or 33722808 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 39.

The square root of 404673636 is about 20116.5015845201. The cubic root of 404673636 is about 739.6648323891.

The spelling of 404673636 in words is "four hundred four million, six hundred seventy-three thousand, six hundred thirty-six".