163394400 has 144 divisors (see below), whose sum is σ = 572869584. Its totient is φ = 40212480.

The previous prime is 163394383. The next prime is 163394401. The reversal of 163394400 is 4493361.

163394400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163394401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28582 + ... + 33818.

It is an arithmetic number, because the mean of its divisors is an integer number (3978261).

Almost surely, 2^163394400 is an apocalyptic number.

163394400 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 163394400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (286434792).

163394400 is an abundant number, since it is smaller than the sum of its proper divisors (409475184).

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

163394400 is a wasteful number, since it uses less digits than its factorization.

163394400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5273 (or 5260 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 163394400 is about 12782.5818988184. The cubic root of 163394400 is about 546.6957813828.

The spelling of 163394400 in words is "one hundred sixty-three million, three hundred ninety-four thousand, four hundred".