508499640 has 256 divisors, whose sum is σ = 1930521600. Its totient is φ = 117849600.

The previous prime is 508499611. The next prime is 508499689. The reversal of 508499640 is 46994805.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 272310 + ... + 274170.

It is an arithmetic number, because the mean of its divisors is an integer number (7541100).

Almost surely, 2^508499640 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 508499640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (965260800).

508499640 is an abundant number, since it is smaller than the sum of its proper divisors (1422021960).

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

508499640 is a wasteful number, since it uses less digits than its factorization.

508499640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1915 (or 1905 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 508499640 is about 22549.9365852767. The cubic root of 508499640 is about 798.1727253452.

The spelling of 508499640 in words is "five hundred eight million, four hundred ninety-nine thousand, six hundred forty".