323800400 has 120 divisors (see below), whose sum is σ = 969979584. Its totient is φ = 100915200.

The previous prime is 323800369. The next prime is 323800403. The reversal of 323800400 is 4008323.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323800403) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 25544 + ... + 36056.

Almost surely, 2^323800400 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 323800400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (484989792).

323800400 is an abundant number, since it is smaller than the sum of its proper divisors (646179184).

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

323800400 is a wasteful number, since it uses less digits than its factorization.

323800400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10549 (or 10538 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 323800400 is about 17994.4547013795. The cubic root of 323800400 is about 686.6874764590.

Adding to 323800400 its reverse (4008323), we get a palindrome (327808723).

The spelling of 323800400 in words is "three hundred twenty-three million, eight hundred thousand, four hundred".