163826280 has 128 divisors (see below), whose sum is σ = 578275200. Its totient is φ = 41112576.

The previous prime is 163826251. The next prime is 163826293. The reversal of 163826280 is 82628361.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13899 + ... + 22821.

It is an arithmetic number, because the mean of its divisors is an integer number (4517775).

Almost surely, 2^163826280 is an apocalyptic number.

163826280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163826280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (289137600).

163826280 is an abundant number, since it is smaller than the sum of its proper divisors (414448920).

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

163826280 is a wasteful number, since it uses less digits than its factorization.

163826280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8960 (or 8950 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 163826280 is about 12799.4640512796. The cubic root of 163826280 is about 547.1770285063.

The spelling of 163826280 in words is "one hundred sixty-three million, eight hundred twenty-six thousand, two hundred eighty".