623039420 has 12 divisors (see below), whose sum is σ = 1308382824. Its totient is φ = 249215760.

The previous prime is 623039419. The next prime is 623039423. The reversal of 623039420 is 24930326.

623039420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623039423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15575966 + ... + 15576005.

It is an arithmetic number, because the mean of its divisors is an integer number (109031902).

Almost surely, 2^623039420 is an apocalyptic number.

It is an amenable number.

623039420 is an abundant number, since it is smaller than the sum of its proper divisors (685343404).

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

623039420 is a wasteful number, since it uses less digits than its factorization.

623039420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31151980 (or 31151978 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 623039420 is about 24960.7576006819. The cubic root of 623039420 is about 854.0930249844.

Adding to 623039420 its reverse (24930326), we get a palindrome (647969746).

The spelling of 623039420 in words is "six hundred twenty-three million, thirty-nine thousand, four hundred twenty".