163440928 has 48 divisors (see below), whose sum is σ = 379620864. Its totient is φ = 67783680.

The previous prime is 163440919. The next prime is 163440929. The reversal of 163440928 is 829044361.

163440928 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (163440929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4825 + ... + 18712.

It is an arithmetic number, because the mean of its divisors is an integer number (7908768).

Almost surely, 2^163440928 is an apocalyptic number.

It is an amenable number.

163440928 is an abundant number, since it is smaller than the sum of its proper divisors (216179936).

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

163440928 is a wasteful number, since it uses less digits than its factorization.

163440928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23585 (or 23577 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 163440928 is about 12784.4017458777. The cubic root of 163440928 is about 546.7476686104.

The spelling of 163440928 in words is "one hundred sixty-three million, four hundred forty thousand, nine hundred twenty-eight".