163440448 has 28 divisors (see below), whose sum is σ = 343407492. Its totient is φ = 76912640.

The previous prime is 163440439. The next prime is 163440449. The reversal of 163440448 is 844044361.

It can be written as a sum of positive squares in 2 ways, for example, as 145733184 + 17707264 = 12072^2 + 4208^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163440449) 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, 74023 + ... + 76198.

Almost surely, 2^163440448 is an apocalyptic number.

It is an amenable number.

163440448 is an abundant number, since it is smaller than the sum of its proper divisors (179967044).

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

163440448 is a wasteful number, since it uses less digits than its factorization.

163440448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150250 (or 150240 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 34.

The square root of 163440448 is about 12784.3829729870. The cubic root of 163440448 is about 546.7471333729.

The spelling of 163440448 in words is "one hundred sixty-three million, four hundred forty thousand, four hundred forty-eight".