163730424 has 96 divisors (see below), whose sum is σ = 484641360. Its totient is φ = 45788160.

The previous prime is 163730407. The next prime is 163730447. The reversal of 163730424 is 424037361.

163730424 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 163730391 and 163730400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35584 + ... + 39920.

Almost surely, 2^163730424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163730424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242320680).

163730424 is an abundant number, since it is smaller than the sum of its proper divisors (320910936).

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

163730424 is a wasteful number, since it uses less digits than its factorization.

163730424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4381 (or 4366 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 163730424 is about 12795.7189715936. The cubic root of 163730424 is about 547.0702885411.

Adding to 163730424 its reverse (424037361), we get a palindrome (587767785).

The spelling of 163730424 in words is "one hundred sixty-three million, seven hundred thirty thousand, four hundred twenty-four".