404213620 has 24 divisors (see below), whose sum is σ = 849822624. Its totient is φ = 161499936.

The previous prime is 404213609. The next prime is 404213653. The reversal of 404213620 is 26312404.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 404213591 and 404213600.

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, 6999 + ... + 29281.

It is an arithmetic number, because the mean of its divisors is an integer number (35409276).

Almost surely, 2^404213620 is an apocalyptic number.

It is an amenable number.

404213620 is an abundant number, since it is smaller than the sum of its proper divisors (445609004).

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

404213620 is a wasteful number, since it uses less digits than its factorization.

404213620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23199 (or 23197 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 404213620 is about 20105.0645360814. The cubic root of 404213620 is about 739.3844528116.

The spelling of 404213620 in words is "four hundred four million, two hundred thirteen thousand, six hundred twenty".