623487240 has 256 divisors, whose sum is σ = 2278368000. Its totient is φ = 150958080.

The previous prime is 623487209. The next prime is 623487247. The reversal of 623487240 is 42784326.

623487240 is a `hidden beast` number, since 623 + 4 + 8 + 7 + 24 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 623487195 and 623487204.

It is not an unprimeable number, because it can be changed into a prime (623487247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 531855 + ... + 533025.

It is an arithmetic number, because the mean of its divisors is an integer number (8899875).

Almost surely, 2^623487240 is an apocalyptic number.

623487240 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 623487240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1139184000).

623487240 is an abundant number, since it is smaller than the sum of its proper divisors (1654880760).

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

623487240 is a wasteful number, since it uses less digits than its factorization.

623487240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1237 (or 1227 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The square root of 623487240 is about 24969.7264702680. The cubic root of 623487240 is about 854.2976071905.

The spelling of 623487240 in words is "six hundred twenty-three million, four hundred eighty-seven thousand, two hundred forty".