623410040 has 128 divisors (see below), whose sum is σ = 1588248000. Its totient is φ = 218234880.

The previous prime is 623410027. The next prime is 623410049. The reversal of 623410040 is 40014326.

It is a happy number.

623410040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 623409994 and 623410021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623410049) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2425592 + ... + 2425848.

Almost surely, 2^623410040 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 623410040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (794124000).

623410040 is an abundant number, since it is smaller than the sum of its proper divisors (964837960).

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

623410040 is a wasteful number, since it uses less digits than its factorization.

623410040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465 (or 461 counting only the distinct ones).

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

The square root of 623410040 is about 24968.1805504526. The cubic root of 623410040 is about 854.2623461120.

Adding to 623410040 its reverse (40014326), we get a palindrome (663424366).

The spelling of 623410040 in words is "six hundred twenty-three million, four hundred ten thousand, forty".