623303320 has 128 divisors (see below), whose sum is σ = 1499057280. Its totient is φ = 232960000.

The previous prime is 623303281. The next prime is 623303347. The reversal of 623303320 is 23303326.

It is a junction number, because it is equal to n+sod(n) for n = 623303291 and 623303300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6171270 + ... + 6171370.

It is an arithmetic number, because the mean of its divisors is an integer number (11711385).

Almost surely, 2^623303320 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 623303320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (749528640).

623303320 is an abundant number, since it is smaller than the sum of its proper divisors (875753960).

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

623303320 is a wasteful number, since it uses less digits than its factorization.

623303320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277 (or 273 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 22.

The square root of 623303320 is about 24966.0433389033. The cubic root of 623303320 is about 854.2135969879.

Adding to 623303320 its reverse (23303326), we get a palindrome (646606646).

The spelling of 623303320 in words is "six hundred twenty-three million, three hundred three thousand, three hundred twenty".