163428823 has 32 divisors (see below), whose sum is σ = 187545600. Its totient is φ = 141647616.

The previous prime is 163428817. The next prime is 163428841. The reversal of 163428823 is 328824361.

It is a de Polignac number, because none of the positive numbers 2^k-163428823 is a prime.

It is a super-3 number, since 3×163428823³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163428883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1499293 + ... + 1499401.

It is an arithmetic number, because the mean of its divisors is an integer number (5860800).

Almost surely, 2^163428823 is an apocalyptic number.

163428823 is a deficient number, since it is larger than the sum of its proper divisors (24116777).

163428823 is a wasteful number, since it uses less digits than its factorization.

163428823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271.

The product of its digits is 55296, while the sum is 37.

The square root of 163428823 is about 12783.9283086225. The cubic root of 163428823 is about 546.7341702698.

The spelling of 163428823 in words is "one hundred sixty-three million, four hundred twenty-eight thousand, eight hundred twenty-three".