163730256 has 20 divisors (see below), whose sum is σ = 422969952. Its totient is φ = 54576736.

The previous prime is 163730243. The next prime is 163730257. The reversal of 163730256 is 652037361.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163730257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1705476 + ... + 1705571.

Almost surely, 2^163730256 is an apocalyptic number.

163730256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

163730256 is an abundant number, since it is smaller than the sum of its proper divisors (259239696).

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

163730256 is a wasteful number, since it uses less digits than its factorization.

163730256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3411058 (or 3411052 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 33.

The square root of 163730256 is about 12795.7124068963. The cubic root of 163730256 is about 547.0701014290.

The spelling of 163730256 in words is "one hundred sixty-three million, seven hundred thirty thousand, two hundred fifty-six".