504243640 has 16 divisors (see below), whose sum is σ = 1134548280. Its totient is φ = 201697440.

The previous prime is 504243601. The next prime is 504243653. The reversal of 504243640 is 46342405.

It is a junction number, because it is equal to n+sod(n) for n = 504243599 and 504243608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6303006 + ... + 6303085.

Almost surely, 2^504243640 is an apocalyptic number.

It is an amenable number.

504243640 is an abundant number, since it is smaller than the sum of its proper divisors (630304640).

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

504243640 is a wasteful number, since it uses less digits than its factorization.

504243640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12606102 (or 12606098 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 504243640 is about 22455.3699590989. The cubic root of 504243640 is about 795.9396560401.

The spelling of 504243640 in words is "five hundred four million, two hundred forty-three thousand, six hundred forty".