163266400 has 72 divisors (see below), whose sum is σ = 434831544. Its totient is φ = 59366400.

The previous prime is 163266371. The next prime is 163266401. The reversal of 163266400 is 4662361.

163266400 is nontrivially palindromic in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163266401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 477 + ... + 18076.

It is an arithmetic number, because the mean of its divisors is an integer number (6039327).

Almost surely, 2^163266400 is an apocalyptic number.

163266400 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 163266400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217415772).

163266400 is an abundant number, since it is smaller than the sum of its proper divisors (271565144).

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

163266400 is a wasteful number, since it uses less digits than its factorization.

163266400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18584 (or 18571 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 163266400 is about 12777.5741046570. The cubic root of 163266400 is about 546.5529871359.

The spelling of 163266400 in words is "one hundred sixty-three million, two hundred sixty-six thousand, four hundred".