404453020 has 24 divisors (see below), whose sum is σ = 849739968. Its totient is φ = 161707200.

The previous prime is 404453003. The next prime is 404453033. The reversal of 404453020 is 20354404.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 404452982 and 404453000.

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, 67965 + ... + 73675.

It is an arithmetic number, because the mean of its divisors is an integer number (35405832).

Almost surely, 2^404453020 is an apocalyptic number.

It is an amenable number.

404453020 is an abundant number, since it is smaller than the sum of its proper divisors (445286948).

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

404453020 is a wasteful number, since it uses less digits than its factorization.

404453020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9261 (or 9259 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 404453020 is about 20111.0173785415. The cubic root of 404453020 is about 739.5303935515.

The spelling of 404453020 in words is "four hundred four million, four hundred fifty-three thousand, twenty".