163428656 has 10 divisors (see below), whose sum is σ = 316643052. Its totient is φ = 81714320.

The previous prime is 163428641. The next prime is 163428689. The reversal of 163428656 is 656824361.

163428656 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5107130 + ... + 5107161.

Almost surely, 2^163428656 is an apocalyptic number.

163428656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

163428656 is a deficient number, since it is larger than the sum of its proper divisors (153214396).

163428656 is a wasteful number, since it uses less digits than its factorization.

163428656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10214299 (or 10214293 counting only the distinct ones).

The product of its digits is 207360, while the sum is 41.

The square root of 163428656 is about 12783.9217769822. The cubic root of 163428656 is about 546.7339840427.

The spelling of 163428656 in words is "one hundred sixty-three million, four hundred twenty-eight thousand, six hundred fifty-six".