502878640 has 40 divisors (see below), whose sum is σ = 1275485328. Its totient is φ = 182864640.

The previous prime is 502878631. The next prime is 502878661. The reversal of 502878640 is 46878205.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 502878593 and 502878602.

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, 284847 + ... + 286606.

Almost surely, 2^502878640 is an apocalyptic number.

It is an amenable number.

502878640 is an abundant number, since it is smaller than the sum of its proper divisors (772606688).

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

502878640 is a wasteful number, since it uses less digits than its factorization.

502878640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571477 (or 571471 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 502878640 is about 22424.9557413164. The cubic root of 502878640 is about 795.2207975511.

The spelling of 502878640 in words is "five hundred two million, eight hundred seventy-eight thousand, six hundred forty".