623441520 has 240 divisors, whose sum is σ = 2308706400. Its totient is φ = 149796864.

The previous prime is 623441503. The next prime is 623441543. The reversal of 623441520 is 25144326.

623441520 is a `hidden beast` number, since 623 + 4 + 4 + 15 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 401706 + ... + 403254.

It is an arithmetic number, because the mean of its divisors is an integer number (9619610).

Almost surely, 2^623441520 is an apocalyptic number.

623441520 is a gapful number since it is divisible by the number (60) 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 623441520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1154353200).

623441520 is an abundant number, since it is smaller than the sum of its proper divisors (1685264880).

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

623441520 is a wasteful number, since it uses less digits than its factorization.

623441520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1624 (or 1615 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 623441520 is about 24968.8109448568. The cubic root of 623441520 is about 854.2767249447.

Adding to 623441520 its reverse (25144326), we get a palindrome (648585846).

The spelling of 623441520 in words is "six hundred twenty-three million, four hundred forty-one thousand, five hundred twenty".