163904424 has 16 divisors (see below), whose sum is σ = 409761120. Its totient is φ = 54634800.

The previous prime is 163904359. The next prime is 163904443. The reversal of 163904424 is 424409361.

163904424 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3414652 + ... + 3414699.

It is an arithmetic number, because the mean of its divisors is an integer number (25610070).

Almost surely, 2^163904424 is an apocalyptic number.

It is an amenable number.

163904424 is an abundant number, since it is smaller than the sum of its proper divisors (245856696).

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

163904424 is a wasteful number, since it uses less digits than its factorization.

163904424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6829360 (or 6829356 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 163904424 is about 12802.5163151624. The cubic root of 163904424 is about 547.2640145604.

The spelling of 163904424 in words is "one hundred sixty-three million, nine hundred four thousand, four hundred twenty-four".