396223820 has 12 divisors (see below), whose sum is σ = 832070064. Its totient is φ = 158489520.

The previous prime is 396223759. The next prime is 396223837. The reversal of 396223820 is 28322693.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9905576 + ... + 9905615.

It is an arithmetic number, because the mean of its divisors is an integer number (69339172).

Almost surely, 2^396223820 is an apocalyptic number.

It is an amenable number.

396223820 is an abundant number, since it is smaller than the sum of its proper divisors (435846244).

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

396223820 is a wasteful number, since it uses less digits than its factorization.

396223820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19811200 (or 19811198 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 396223820 is about 19905.3716368221. The cubic root of 396223820 is about 734.4803706839.

The spelling of 396223820 in words is "three hundred ninety-six million, two hundred twenty-three thousand, eight hundred twenty".