163798028 has 6 divisors (see below), whose sum is σ = 286646556. Its totient is φ = 81899012.

The previous prime is 163798027. The next prime is 163798039. The reversal of 163798028 is 820897361.

It is a self number, because there is not a number n which added to its sum of digits gives 163798028.

It is not an unprimeable number, because it can be changed into a prime (163798027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20474750 + ... + 20474757.

It is an arithmetic number, because the mean of its divisors is an integer number (47774426).

Almost surely, 2^163798028 is an apocalyptic number.

It is an amenable number.

163798028 is a deficient number, since it is larger than the sum of its proper divisors (122848528).

163798028 is a wasteful number, since it uses less digits than its factorization.

163798028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40949511 (or 40949509 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 163798028 is about 12798.3603637341. The cubic root of 163798028 is about 547.1455729626.

The spelling of 163798028 in words is "one hundred sixty-three million, seven hundred ninety-eight thousand, twenty-eight".