505626440 has 32 divisors (see below), whose sum is σ = 1241084160. Its totient is φ = 183864000.

The previous prime is 505626439. The next prime is 505626481. The reversal of 505626440 is 44626505.

It is a junction number, because it is equal to n+sod(n) for n = 505626397 and 505626406.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 574136 + ... + 575015.

It is an arithmetic number, because the mean of its divisors is an integer number (38783880).

Almost surely, 2^505626440 is an apocalyptic number.

It is an amenable number.

505626440 is an abundant number, since it is smaller than the sum of its proper divisors (735457720).

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

505626440 is a wasteful number, since it uses less digits than its factorization.

505626440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1149173 (or 1149169 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 505626440 is about 22486.1388415175. The cubic root of 505626440 is about 796.6665670730. Note that the first 3 decimals are identical.

The spelling of 505626440 in words is "five hundred five million, six hundred twenty-six thousand, four hundred forty".