163670328 has 64 divisors (see below), whose sum is σ = 469324800. Its totient is φ = 52794720.

The previous prime is 163670317. The next prime is 163670329. The reversal of 163670328 is 823076361.

It is a happy number.

163670328 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (36) 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 (36).

It is a junction number, because it is equal to n+sod(n) for n = 163670292 and 163670301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163670329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5526 + ... + 18917.

It is an arithmetic number, because the mean of its divisors is an integer number (7333200).

Almost surely, 2^163670328 is an apocalyptic number.

163670328 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

163670328 is an abundant number, since it is smaller than the sum of its proper divisors (305654472).

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

163670328 is a wasteful number, since it uses less digits than its factorization.

163670328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24489 (or 24479 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 163670328 is about 12793.3704706774. The cubic root of 163670328 is about 547.0033476952.

The spelling of 163670328 in words is "one hundred sixty-three million, six hundred seventy thousand, three hundred twenty-eight".