163673328 has 240 divisors, whose sum is σ = 545027616. Its totient is φ = 41932800.

The previous prime is 163673269. The next prime is 163673329. The reversal of 163673328 is 823376361.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a nude number because it is divisible by every one of its digits.

Its product of digits (108864) is a multiple of the sum of its prime factors (192).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163673329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1620478 + ... + 1620578.

Almost surely, 2^163673328 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 163673328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272513808).

163673328 is an abundant number, since it is smaller than the sum of its proper divisors (381354288).

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

163673328 is a wasteful number, since it uses less digits than its factorization.

163673328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192 (or 179 counting only the distinct ones).

The product of its digits is 108864, while the sum is 39.

The square root of 163673328 is about 12793.4877183667. The cubic root of 163673328 is about 547.0066897793.

The spelling of 163673328 in words is "one hundred sixty-three million, six hundred seventy-three thousand, three hundred twenty-eight".