163403020 has 48 divisors (see below), whose sum is σ = 382330368. Its totient is φ = 58151360.

The previous prime is 163403003. The next prime is 163403033. The reversal of 163403020 is 20304361.

163403020 is digitally balanced in base 2, 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 in 15 ways as a sum of consecutive naturals, for example, 2439 + ... + 18241.

It is an arithmetic number, because the mean of its divisors is an integer number (7965216).

Almost surely, 2^163403020 is an apocalyptic number.

163403020 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 163403020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191165184).

163403020 is an abundant number, since it is smaller than the sum of its proper divisors (218927348).

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

163403020 is a wasteful number, since it uses less digits than its factorization.

163403020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15870 (or 15868 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 163403020 is about 12782.9190719491. The cubic root of 163403020 is about 546.7053950023.

Adding to 163403020 its reverse (20304361), we get a palindrome (183707381).

The spelling of 163403020 in words is "one hundred sixty-three million, four hundred three thousand, twenty".