263400000 has 168 divisors, whose sum is σ = 873069120. Its totient is φ = 70080000.

The previous prime is 263399977. The next prime is 263400001. The reversal of 263400000 is 4362.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (263400001) 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, 599781 + ... + 600219.

It is an arithmetic number, because the mean of its divisors is an integer number (5196840).

Almost surely, 2^263400000 is an apocalyptic number.

263400000 is a gapful number since it is divisible by the number (20) 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 263400000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (436534560).

263400000 is an abundant number, since it is smaller than the sum of its proper divisors (609669120).

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

263400000 is an frugal number, since it uses more digits than its factorization.

263400000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479 (or 449 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 263400000 is about 16229.6025829347. The cubic root of 263400000 is about 641.0205073093.

Adding to 263400000 its reverse (4362), we get a palindrome (263404362).

The spelling of 263400000 in words is "two hundred sixty-three million, four hundred thousand".