163463728 has 20 divisors (see below), whose sum is σ = 318841200. Its totient is φ = 81182144.

The previous prime is 163463723. The next prime is 163463747. The reversal of 163463728 is 827364361.

It is not an unprimeable number, because it can be changed into a prime (163463723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31900 + ... + 36667.

It is an arithmetic number, because the mean of its divisors is an integer number (15942060).

Almost surely, 2^163463728 is an apocalyptic number.

It is an amenable number.

163463728 is a deficient number, since it is larger than the sum of its proper divisors (155377472).

163463728 is a wasteful number, since it uses less digits than its factorization.

163463728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68724 (or 68718 counting only the distinct ones).

The product of its digits is 145152, while the sum is 40.

The square root of 163463728 is about 12785.2934264334. The cubic root of 163463728 is about 546.7730911843.

The spelling of 163463728 in words is "one hundred sixty-three million, four hundred sixty-three thousand, seven hundred twenty-eight".